Merge pull request 'chore(config): migrate renovate config' (#3) from renovate/migrate-config into main

Reviewed-on: https://git.nice.net.nz/hads/pocketbase-docker/pulls/3

renovate.json

@@ -3,8 +3,9 @@
   "extends": [
     "local>hads/renovate-config"
   ],
-  "regexManagers": [
+  "customManagers": [
     {
+      "customType": "regex",
       "fileMatch": [
         "(^|/)Dockerfile$",
         "(^|/)Dockerfile\\.[^/]*$"
@@ -14,4 +15,4 @@
       ]
     }
   ]
-}
+}