Update renovate.json

Author: LeoColman

renovate.json

@@ -1,6 +1,13 @@
+
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
     "config:base"
-  ]
+  ],
+  "automerge": true,
+  "major": {
+    "automerge": false
+  },
+
+  "commitMessagePrefix": "⬆"
 }