Merge pull request 'fix: restict renovate to create renovate PRs on friday' (!210) from fix/renovate-config into master

Reviewed-on: Netz39_Admin/netz39-infra-ansible#210

renovate.json

@@ -1,7 +1,5 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "labels": ["untested"],
-  "reviewers": ["Netz39_Admin/Admins"],
   "regexManagers": [
     {
       "fileMatch": [
@@ -14,5 +12,12 @@
         "image: (?<depName>.*?):(?<currentValue>.*?)(@(?<currentDigest>sha256:.*?))?\\s"
       ]
     }
+  ],
+  "packageRules": [
+    {
+      "matchPackageNames": ["renovate/renovate"],
+      "schedule": [ "on friday" ]
+    }
   ]
+
 }