ci: disable major devDependencies updates

Author: Alan Agius

renovate.json

@@ -19,12 +19,18 @@
   ],
   "ignoreDeps": [
     "source-map",
+    "@types/node",
     "webpack-subresource-integrity"
   ],
   "packageFiles": [
     "package.json",
     "packages/**/package.json"
   ],
+  "major": {
+    "devDependencies": {
+      "enabled": false
+    }
+  },
   "packageRules": [
     {
       "packagePatterns": [