Bump gotest.tools/gotestsum from 1.6.4 to 1.8.1 in /hack/tools

Bumps [gotest.tools/gotestsum](https://github.com/gotestyourself/gotestsum) from 1.6.4 to 1.8.1.
- [Release notes](https://github.com/gotestyourself/gotestsum/releases)
- [Changelog](https://github.com/gotestyourself/gotestsum/blob/main/.goreleaser.yml)
- [Commits](gotestyourself/gotestsum@v1.6.4...v1.8.1)

---
updated-dependencies:
- dependency-name: gotest.tools/gotestsum
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

hack/tools/go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/itchyny/gojq v0.12.5
 	github.com/joelanford/go-apidiff v0.4.0
 	github.com/onsi/ginkgo v1.16.5
-	gotest.tools/gotestsum v1.6.4
+	gotest.tools/gotestsum v1.8.1
 	k8s.io/code-generator v0.23.5
 	sigs.k8s.io/cluster-api/hack/tools v0.0.0-20220603170822-1c3a1526f101
 	sigs.k8s.io/controller-runtime/tools/setup-envtest v0.0.0-20211110210527-619e6b92dab9

hack/tools/go.sum

@@ -2321,8 +2321,9 @@ gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
 gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
-gotest.tools/gotestsum v1.6.4 h1:HFkapG0hK/HWiOxWS78SbR/JK5EpbH8hFzUuCvvfbfQ=
 gotest.tools/gotestsum v1.6.4/go.mod h1:fTR9ZhxC/TLAAx2/WMk/m3TkMB9eEI89gdEzhiRVJT8=
+gotest.tools/gotestsum v1.8.1 h1:C6dYd5K39WAv52jikEUuWgyMqJDhY90eauUjsFzwluc=
+gotest.tools/gotestsum v1.8.1/go.mod h1:ctqdxBSCPv80kAFjYvFNpPntBrE5HAQnLiOKBGLmOBs=
 gotest.tools/v3 v3.0.2/go.mod h1:3SzNCllyD9/Y+b5r9JIKQ474KzkZyqLqEfYqMsX94Bk=
 gotest.tools/v3 v3.0.3 h1:4AuOwCGf4lLR9u3YOe2awrHygurzhO/HeQ6laiA6Sx0=
 gotest.tools/v3 v3.0.3/go.mod h1:Z7Lb0S5l+klDB31fvDQX8ss/FlKDxtlFlw3Oa8Ymbl8=