Merge pull request #7555 from bzsuni/bz/coredns/update/1.12.0

Promote coredns to v1.12.0

Author: k8s-ci-robot

registry.k8s.io/images/k8s-staging-coredns/images.yaml

@@ -18,3 +18,4 @@
     "sha256:1eeb4c7316bacb1d4c8ead65571cd92dd21e27359f0d4917f1a5822a73b75db1": ["v1.11.1"]
     "sha256:9caabbf6238b189a65d0d6e6ac138de60d6a1c419e5a341fbbb7c78382559c6e": ["v1.11.3"]
     "sha256:4190b960ea90e017631e3e1a38eea28e98e057ab60d57d47b3db6e5cf77436f7": ["v1.11.4"]
+    "sha256:40384aa1f5ea6bfdc77997d243aec73da05f27aed0c5e9d65bfa98933c519d97": ["v1.12.0"]