Add concurrency group for codeql workflow

.github/workflows/codeql-analysis.yml

@@ -1,5 +1,12 @@
 name: CodeQL
 
+# Cancel previous workflow run groups that have not completed.
+concurrency:
+  # Group workflow runs by workflow name, along with the head branch ref of the pull request
+  # or otherwise the branch or tag ref.
+  group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 on:
   push:
     # Only run if JS or Python files changed.