Bump github.com/stretchr/testify from 1.8.0 to 1.8.1 (#1951)

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](https://github.com/stretchr/testify/compare/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>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -40,7 +40,7 @@ require (
 	github.com/sirupsen/logrus v1.9.0
 	github.com/spf13/cobra v1.5.0
 	github.com/spf13/viper v1.13.0
-	github.com/stretchr/testify v1.8.0
+	github.com/stretchr/testify v1.8.1
 	github.com/unrolled/secure v1.13.0
 	github.com/xrash/smetrics v0.0.0-20200730060457-89a2a8a1fb0b
 	golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8
@@ -206,7 +206,7 @@ require (
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/ssgreg/nlreturn/v2 v2.2.1 // indirect
 	github.com/stbenjam/no-sprintf-host-port v0.1.1 // indirect
-	github.com/stretchr/objx v0.4.0 // indirect
+	github.com/stretchr/objx v0.5.0 // indirect
 	github.com/subosito/gotenv v1.4.1 // indirect
 	github.com/sylvia7788/contextcheck v1.0.6 // indirect
 	github.com/tdakkota/asciicheck v0.1.1 // indirect