chore: simplify renovate config

renovate.json

@@ -6,20 +6,12 @@
   "dockerfile": {
     "semanticCommitType": "build"
   },
-  "prBodyDefinitions": {
-    "Sourcegraph": "[![code search for \"{{{depName}}}\"](https://sourcegraph.com/search/badge?q=repo:%5Egithub%5C.com/{{{repository}}}%24+case:yes+-file:package%28-lock%29%3F%5C.json+{{{depName}}}&label=matches)](https://sourcegraph.com/search?q=repo:%5Egithub%5C.com/{{{repository}}}%24+case:yes+-file:package%28-lock%29%3F%5C.json+{{{depName}}})"
-  },
-  "prBodyColumns": ["Package", "Update", "Type", "Change", "Sourcegraph"],
   "stabilityDays": 3,
   "packageRules": [
     {
       "datasources": ["docker"],
       "automerge": false
     },
-    {
-      "packageNames": ["npm", "yarn"],
-      "automerge": false
-    },
     {
       "depTypeList": ["dependencies"],
       "semanticCommitType": "build"