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

Reviewed-on: #3

renovate.json

@@ -1,21 +1,26 @@
 {
   "extends": [
-      "config:base"
+    "config:recommended"
+  ],
+  "labels": [
+    "ready for review"
   ],
-  
-    "labels": ["ready for review"],
-  
   "ignoreUnstable": true,
   "minimumReleaseAge": "3",
-
   "packageRules": [
     {
-        "matchUpdateTypes": ["major"],
-        "labels": ["UPDATE-MAJOR"]
-      }
+      "matchCategories": [
+        "docker"
       ],
-  
-    "docker": {
       "pinDigests": true
+    },
+    {
+      "matchUpdateTypes": [
+        "major"
+      ],
+      "labels": [
+        "UPDATE-MAJOR"
+      ]
     }
-  }
+  ]
+}