Renovate: Migrate to actively maintained config

no ref

- This repo was using an older stlye config that doesn't currently work
- All our other repos use this newer config which handles dep updates better
- Making this change as renovate is currently trying to merge broken things and causing chaos

Author: jloh

renovate.json

@@ -1,12 +1,10 @@
 {
-  "extends": [
-    "@tryghost:quietJS"
-  ],
+  "extends": ["github>tryghost/renovate-config"],
   "ignorePaths": ["packages/members"],
   "packageRules": [
     {
       "groupName": "rollup + plugins",
       "packagePatterns": ["^rollup"]
     }
-   ]
+  ]
 }