Merge pull request #6700 from twz123/renovate-docker-regexes

Tune Renovate OCI image version detection regex

Author: twz123

renovate.json

@@ -282,7 +282,7 @@
         "**/Makefile*"
       ],
       "matchStrings": [
-        "\\b(?<depName>(docker|quay)\\.io/[a-z0-9][a-z0-9._-]*/[a-z0-9][a-z0-9._-]*)(:|.*\\n.*= \")v?(?<currentValue>[a-z0-9_][\\w.-]{0,127})"
+        "\\b(?<depName>(docker|k8s\\.gcr|quay)\\.io/(?:[a-z0-9][a-z0-9._-]*/)?[a-z0-9][a-z0-9._-]*)(:|.*\\n.*= \")v?(?<currentValue>[0-9_][\\w.-]{0,127})"
       ],
       "datasourceTemplate": "docker",
       "extractVersionTemplate": "^v?(?<version>[\\w][\\w.-]{0,127})"