release-2.38: disable renovate automerge (#2344)

Co-authored-by: Misha Sugakov <[email protected]>

Author: tommartensen

.github/renovate.json5

@@ -88,6 +88,7 @@
     }
   ],
   "labels": [
+    // Add auto-approve label which triggers the corresponding workflow.
     "auto-approve",
   ],
 }

.github/workflows/auto-approve.yml

@@ -7,9 +7,9 @@ on:
 
 jobs:
   auto-approve:
-    name: Auto-approve Konflux updates
+    name: Auto-approve Konflux updates for default branch
     runs-on: ubuntu-latest
-    if: github.actor == 'red-hat-konflux[bot]' && github.event.label.name == 'auto-approve'
+    if: github.actor == 'red-hat-konflux[bot]' && github.event.label.name == 'auto-approve' && github.event.pull_request.base.ref == github.event.pull_request.base.repo.default_branch
     steps:
     - env:
         GH_TOKEN: ${{ secrets.RHACS_BOT_GITHUB_TOKEN }}