chore(linters): Fix findings found by testifylint: go-require for plugins/outputs

[zak-pawel]

Summary

This is only the first part of a larger effort to address the findings identified by testifylint: go-require: #15535
Once all the findings have been addressed, testifylint: go-require can be enabled in .golangci.yml.

In this PR, I’m focusing on plugins/outputs.

Here are the findings that this PR addresses:

plugins/outputs/file/file_test.go:269:3                     testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:83:3              testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:87:3              testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:88:3              testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:89:3              testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:90:3              testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:169:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:173:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:174:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:175:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:176:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:704:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:708:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:709:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:710:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:711:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:721:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:725:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:726:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:728:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:729:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:730:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:731:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:741:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:745:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:746:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:747:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:748:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:758:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:762:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:763:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:765:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:766:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:767:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:768:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:778:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:782:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:783:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:784:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:785:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:795:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:799:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:800:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:802:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:803:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:804:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:805:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:815:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:819:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:820:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:821:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:822:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:832:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:836:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:837:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:839:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:840:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:841:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graphite/graphite_test.go:842:3             testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graylog/graylog_test_linux.go:194:3         testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graylog/graylog_test_linux.go:195:3         testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graylog/graylog_test_linux.go:196:3         testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/graylog/graylog_test_linux.go:197:3         testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/opentelemetry/opentelemetry_test.go:108:14  testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/postgresql/postgresql_test.go:626:4         testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/postgresql/postgresql_test.go:675:4         testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/postgresql/postgresql_test.go:919:10        testifylint  go-require: newPostgresqlTest contains assertions that must only be used in the goroutine running the test function
plugins/outputs/postgresql/postgresql_test.go:923:5         testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/postgresql/postgresql_test.go:928:5         testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/postgresql/postgresql_test.go:929:5         testifylint  go-require: require must only be used in the goroutine running the test function
plugins/outputs/postgresql/postgresql_test.go:930:5         testifylint  go-require: require must only be used in the goroutine running the test function

Checklist

• No AI generated code was used in this PR

[telegraf-tiger]

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[srebhan]

Thanks a lot @zak-pawel!