chore: run CI on release-please branches

- Add 'release-please--branches--main' to CI workflow triggers
- Ensures CI runs on release-please PRs for branch protection
- Allows release PRs to pass CI checks and merge automatically

Author: d0ugal

.github/workflows/ci.yml

@@ -2,7 +2,7 @@ name: CI
 
 on:
   push:
-    branches: [ main ]
+    branches: [ main, 'release-please--branches--main' ]
   pull_request:
 
 env: