Bump k8s.io/apiextensions-apiserver from 0.22.4 to 0.23.4

Bumps [k8s.io/apiextensions-apiserver](https://github.com/kubernetes/apiextensions-apiserver) from 0.22.4 to 0.23.4.
- [Release notes](https://github.com/kubernetes/apiextensions-apiserver/releases)
- [Commits](kubernetes/apiextensions-apiserver@v0.22.4...v0.23.4)

---
updated-dependencies:
- dependency-name: k8s.io/apiextensions-apiserver
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -6,10 +6,10 @@ require (
 	github.com/spf13/cobra v1.3.0
 	github.com/stretchr/testify v1.7.0
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
-	k8s.io/api v0.22.4
-	k8s.io/apiextensions-apiserver v0.22.4
-	k8s.io/apimachinery v0.22.4
-	k8s.io/client-go v0.22.4
+	k8s.io/api v0.23.4
+	k8s.io/apiextensions-apiserver v0.23.4
+	k8s.io/apimachinery v0.23.4
+	k8s.io/client-go v0.23.4
 )
 
 go 1.16