Bump github.com/imdario/mergo from 0.3.7 to 0.3.9 (#312)

Bumps [github.com/imdario/mergo](https://github.com/imdario/mergo) from 0.3.7 to 0.3.9.
- [Release notes](https://github.com/imdario/mergo/releases)
- [Commits](darccio/mergo@v0.3.7...v0.3.9)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

go.mod

@@ -38,7 +38,7 @@ require (
 	github.com/gregjones/httpcache v0.0.0-20190212212710-3befbb6ad0cc
 	github.com/grpc-ecosystem/grpc-gateway v1.14.6
 	github.com/hashicorp/golang-lru v0.5.4
-	github.com/imdario/mergo v0.3.7
+	github.com/imdario/mergo v0.3.9
 	github.com/joho/godotenv v1.3.0
 	github.com/json-iterator/go v1.1.9
 	github.com/karrick/godirwalk v1.15.6

go.sum

@@ -257,6 +257,8 @@ github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/imdario/mergo v0.3.7 h1:Y+UAYTZ7gDEuOfhxKWy+dvb5dRQ6rJjFSdX2HZY1/gI=
 github.com/imdario/mergo v0.3.7/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
+github.com/imdario/mergo v0.3.9 h1:UauaLniWCFHWd+Jp9oCEkTBj8VO/9DKg3PV3VCNMDIg=
+github.com/imdario/mergo v0.3.9/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc=