chore: disable Renovate managers for Maven and Dockerfiles

We don't want that noise at the moment.

Author: poikilotherm

renovate.json5

@@ -27,6 +27,16 @@
     ],
 
     packageRules: [
+        {
+            description: "Disable Maven Manager",
+            matchManagers: "maven",
+            enabled: false
+        },
+        {
+            description: "Disable Dockerfile Manager",
+            matchManagers: "dockerfile",
+            enabled: false
+        },
         {
             description: "Group package updates for the Config Baker Container Image",
             matchFileNames: ["modules/container-configbaker/**/*[dD]ockerfile"],