chore(deps): update quay.io/ceph/ceph docker tag to v20

Author: renovate[bot]

kubernetes/addons/storage/rook-ceph/external-ceph-cluster/values.yaml

@@ -7,7 +7,7 @@ cephClusterSpec:
     enable: true
   cephVersion:
     # The version must match with the local installed
-    image: quay.io/ceph/ceph:v19.2.1
+    image: quay.io/ceph/ceph:v20.1.1
     allowUnsupported: false
   dataDirHostPath: /var/lib/rook
   crashCollector: