Bump github.com/hashicorp/nomad from 1.0.4 to 1.2.6

Bumps [github.com/hashicorp/nomad](https://github.com/hashicorp/nomad) from 1.0.4 to 1.2.6.
- [Release notes](https://github.com/hashicorp/nomad/releases)
- [Changelog](https://github.com/hashicorp/nomad/blob/main/CHANGELOG.md)
- [Commits](hashicorp/nomad@v1.0.4...v1.2.6)

---
updated-dependencies:
- dependency-name: github.com/hashicorp/nomad
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -5,30 +5,18 @@ go 1.15
 require (
 	github.com/Jeffail/tunny v0.0.0-20210126202424-1b37d6cb867a
 	github.com/alecthomas/chroma v0.10.0
-	github.com/armon/go-metrics v0.3.6 // indirect
 	github.com/buildkite/terminal-to-html v3.2.0+incompatible
 	github.com/cpuguy83/go-md2man/v2 v2.0.0 // indirect
-	github.com/fatih/color v1.10.0 // indirect
-	github.com/golang/protobuf v1.4.3 // indirect
 	github.com/gorilla/mux v1.8.0
-	github.com/hashicorp/errwrap v1.1.0 // indirect
-	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
-	github.com/hashicorp/go-hclog v0.15.0 // indirect
-	github.com/hashicorp/go-memdb v1.3.1 // indirect
-	github.com/hashicorp/go-plugin v1.4.0 // indirect
-	github.com/hashicorp/go-version v1.2.1 // indirect
-	github.com/hashicorp/nomad v1.0.4
+	github.com/hashicorp/nomad v1.2.6
 	github.com/hashicorp/nomad/api v0.0.0-20210301154622-7832e0690701
 	github.com/hashicorp/raft v1.2.0 // indirect
 	github.com/hashicorp/yamux v0.0.0-20200609203250-aecfd211c9ce // indirect
 	github.com/karlseguin/ccache v2.0.3+incompatible
 	github.com/karlseguin/expect v1.0.1 // indirect
 	github.com/mattn/go-runewidth v0.0.10 // indirect
 	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db
-	github.com/mitchellh/copystructure v1.1.1 // indirect
-	github.com/mitchellh/go-testing-interface v1.14.1 // indirect
 	github.com/mitchellh/hashstructure v1.1.0 // indirect
-	github.com/mitchellh/mapstructure v1.4.1 // indirect
 	github.com/oklog/run v1.1.0 // indirect
 	github.com/olekukonko/tablewriter v0.0.5
 	github.com/rivo/uniseg v0.2.0 // indirect
@@ -37,12 +25,6 @@ require (
 	github.com/sirupsen/logrus v1.8.1
 	github.com/urfave/cli v1.22.5
 	github.com/wsxiaoys/terminal v0.0.0-20160513160801-0940f3fc43a0 // indirect
-	golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83 // indirect
-	golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 // indirect
-	golang.org/x/sys v0.0.0-20210301091718-77cc2087c03b // indirect
-	golang.org/x/text v0.3.5 // indirect
-	google.golang.org/genproto v0.0.0-20210226172003-ab064af71705 // indirect
-	google.golang.org/grpc v1.36.0 // indirect
 	gopkg.in/karlseguin/expect.v1 v1.0.1 // indirect
 	gopkg.in/workanator/go-ataman.v1 v1.0.0-20201223053604-e3b73d2e8108
 	gopkg.in/yaml.v2 v2.4.0