chore: update workflow group

Author: hashemix

.github/workflows/lint-pr.yml

@@ -12,7 +12,7 @@ permissions:
   pull-requests: read
 
 concurrency:
-  group: pr-${{ github.event.pull_request.number }}
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
   cancel-in-progress: true
 
 jobs: