bump k8s dependencies

This commit bumps:
1. k8s dependencies to 1.21+
2. Controller runtime to 0.9.2
3. Kubebuilder to the latest version at the time of this commit

go.mod

@@ -4,29 +4,29 @@ go 1.16
 
 require (
 	github.com/blang/semver/v4 v4.0.0
-	github.com/containerd/containerd v1.4.3 // indirect
-	github.com/go-logr/logr v0.3.0
+	github.com/go-logr/logr v0.4.0
 	github.com/iancoleman/strcase v0.1.2
-	github.com/kr/text v0.1.0
-	github.com/onsi/ginkgo v1.15.0
-	github.com/onsi/gomega v1.10.5
+	github.com/kr/text v0.2.0
+	github.com/onsi/ginkgo v1.16.4
+	github.com/onsi/gomega v1.13.0
 	github.com/operator-framework/operator-lib v0.3.0
-	github.com/prometheus/client_golang v1.7.1
-	github.com/sirupsen/logrus v1.7.0
+	github.com/patrickmn/go-cache v2.1.0+incompatible
+	github.com/prometheus/client_golang v1.11.0
+	github.com/sirupsen/logrus v1.8.1
 	github.com/spf13/afero v1.2.2
-	github.com/spf13/cobra v1.1.1
+	github.com/spf13/cobra v1.1.3
 	github.com/spf13/pflag v1.0.5
-	github.com/stretchr/testify v1.6.1
-	gomodules.xyz/jsonpatch/v2 v2.1.0
-	helm.sh/helm/v3 v3.5.0
-	k8s.io/api v0.20.4
-	k8s.io/apiextensions-apiserver v0.20.4
-	k8s.io/apimachinery v0.20.4
-	k8s.io/cli-runtime v0.20.4
-	k8s.io/client-go v0.20.4
-	k8s.io/kubectl v0.20.4
-	sigs.k8s.io/controller-runtime v0.8.2
-	sigs.k8s.io/kubebuilder/v3 v3.1.0
+	github.com/stretchr/testify v1.7.0
+	gomodules.xyz/jsonpatch/v2 v2.2.0
+	helm.sh/helm/v3 v3.6.2
+	k8s.io/api v0.21.2
+	k8s.io/apiextensions-apiserver v0.21.2
+	k8s.io/apimachinery v0.21.2
+	k8s.io/cli-runtime v0.21.0
+	k8s.io/client-go v0.21.2
+	k8s.io/kubectl v0.21.0
+	sigs.k8s.io/controller-runtime v0.9.2
+	sigs.k8s.io/kubebuilder/v3 v3.0.0-alpha.0.0.20210716121009-fde793f20067
 	sigs.k8s.io/yaml v1.2.0
 )