build(deps): bump github.com/stretchr/testify from 1.8.0 to 1.8.1

Bumps [github.com/stretchr/testify](https://github.com/stretchr/testify) from 1.8.0 to 1.8.1.
- [Release notes](https://github.com/stretchr/testify/releases)
- [Commits](stretchr/testify@v1.8.0...v1.8.1)

---
updated-dependencies:
- dependency-name: github.com/stretchr/testify
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/spf13/cobra v1.5.0
 	github.com/spf13/pflag v1.0.6-0.20200504143853-81378bbcd8a1
 	github.com/spf13/viper v1.13.0
-	github.com/stretchr/testify v1.8.0
+	github.com/stretchr/testify v1.8.1
 	golang.org/x/sys v0.0.0-20220928140112-f11e5e49a4ec
 	google.golang.org/grpc v1.50.1
 	google.golang.org/protobuf v1.28.1