Bump to rabbithole v2.8

go.mod

@@ -6,15 +6,15 @@ require (
 	github.com/elastic/crd-ref-docs v0.0.7
 	github.com/go-logr/logr v0.4.0
 	github.com/maxbrunsfeld/counterfeiter/v6 v6.4.1
-	github.com/michaelklishin/rabbit-hole/v2 v2.7.0
+	github.com/michaelklishin/rabbit-hole/v2 v2.8.0
 	github.com/onsi/ginkgo v1.16.1
 	github.com/onsi/gomega v1.11.0
 	github.com/rabbitmq/cluster-operator v1.6.0
 	k8s.io/api v0.20.5
 	k8s.io/apimachinery v0.20.5
 	k8s.io/client-go v0.20.5
-	k8s.io/code-generator v0.20.5
-	k8s.io/kube-openapi v0.0.0-20201113171705-d219536bb9fd
+	k8s.io/code-generator v0.21.0
+	k8s.io/kube-openapi v0.0.0-20210305001622-591a79e4bda7
 	k8s.io/utils v0.0.0-20210111153108-fddb29f9d009
 	sigs.k8s.io/controller-runtime v0.8.3
 	sigs.k8s.io/controller-tools v0.5.0