Merge pull request #3798 from crazy-max/fix-labeler-workflow

ci: scope labeler concurrency to the pull request

Author: crazy-max

.github/workflows/labeler.yml

@@ -4,7 +4,7 @@ permissions:
   contents: read
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
   cancel-in-progress: true
 
 on: