Bump dependencies to Kubernetes 1.20

vendor/k8s.io/apimachinery/pkg/api/meta/conditions.go

@@ -51,6 +51,7 @@ func SetStatusCondition(conditions *[]metav1.Condition, newCondition metav1.Cond
 
 	existingCondition.Reason = newCondition.Reason
 	existingCondition.Message = newCondition.Message
+	existingCondition.ObservedGeneration = newCondition.ObservedGeneration
 }
 
 // RemoveStatusCondition removes the corresponding conditionType from conditions.

vendor/k8s.io/apimachinery/pkg/api/meta/meta.go

@@ -40,8 +40,6 @@ func CommonAccessor(obj interface{}) (metav1.Common, error) {
 	switch t := obj.(type) {
 	case List:
 		return t, nil
-	case metav1.ListInterface:
-		return t, nil
 	case ListMetaAccessor:
 		if m := t.GetListMeta(); m != nil {
 			return m, nil
@@ -72,8 +70,6 @@ func ListAccessor(obj interface{}) (List, error) {
 	switch t := obj.(type) {
 	case List:
 		return t, nil
-	case metav1.ListInterface:
-		return t, nil
 	case ListMetaAccessor:
 		if m := t.GetListMeta(); m != nil {
 			return m, nil

vendor/k8s.io/apimachinery/pkg/api/meta/restmapper.go

@@ -65,6 +65,9 @@ type DefaultRESTMapper struct {
 }
 
 func (m *DefaultRESTMapper) String() string {
+	if m == nil {
+		return "<nil>"
+	}
 	return fmt.Sprintf("DefaultRESTMapper{kindToPluralResource=%v}", m.kindToPluralResource)
 }