feat(images)!: Update quay.io/ceph/ceph Docker tag to v20.2.0

Signed-off-by: Danny Froberg <dfroberg@users.noreply.github.com>

Author: renovate[bot]

cluster/core/storage/rook-ceph-old/storage/ceph-cluster.yaml

@@ -6,7 +6,7 @@ metadata:
   namespace: rook-ceph
 spec:
   cephVersion:
-    image: quay.io/ceph/ceph:v17.2.5
+    image: quay.io/ceph/ceph:v20.2.0
     allowUnsupported: false
   dataDirHostPath: /var/lib/rook
   skipUpgradeChecks: false