chore: ignore experimental packages in renovate.json (#1401)

Helps keep things clean and improve repo metrics such as avg. time to close a PR

Co-authored-by: Kris West <kristopher.west@natwest.com>
Co-authored-by: j-k <jack@control-plane.io>

Author: 3 people

renovate.json

@@ -9,6 +9,7 @@
     "group:linters",
     "group:nodeJs"
   ],
+  "ignorePaths": ["experimental/**"],
   "additionalBranchPrefix": "{{parentDir}}-",
   "commitMessageSuffix": "- {{parentDir}} - {{packageFile}}",
   "packageRules": [