feat(ci): cancel in-progress PR workflows on new commit push

Author: joshuarli

.github/workflows/ci.yml

@@ -8,6 +8,10 @@ on:
 
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 permissions:
   contents: read