Bump k8s.io/client-go from 0.20.4 to 0.20.5

Bumps [k8s.io/client-go](https://github.com/kubernetes/client-go) from 0.20.4 to 0.20.5.
- [Release notes](https://github.com/kubernetes/client-go/releases)
- [Changelog](https://github.com/kubernetes/client-go/blob/master/CHANGELOG.md)
- [Commits](kubernetes/client-go@v0.20.4...v0.20.5)

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

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/rabbitmq/cluster-operator v1.5.0
 	k8s.io/api v0.20.5
 	k8s.io/apimachinery v0.20.5
-	k8s.io/client-go v0.20.4
+	k8s.io/client-go v0.20.5
 	k8s.io/utils v0.0.0-20210111153108-fddb29f9d009
 	sigs.k8s.io/controller-runtime v0.8.3
 	sigs.k8s.io/controller-tools v0.5.0