Merge pull request #86 from openshift-bot/art-consistency-openshift-4.21-ose-cluster-update-keys

OCPBUGS-62464: Updating ose-cluster-update-keys-container image to be consistent with ART for 4.21

Author: openshift-merge-bot[bot]

Dockerfile.rhel

@@ -1,4 +1,4 @@
-FROM registry.ci.openshift.org/ocp/4.20:base-rhel9
+FROM registry.ci.openshift.org/ocp/4.21:base-rhel9
 COPY manifests.rhel/ /manifests/
 LABEL description="This image contains the trusted keys for the updates delivered to a cluster." \
       io.openshift.release.operator=true