ci: add auto-merge workflow for OpenAPI updates

Author: jlin27

.github/workflows/auto-merge-openapi-updates.yml

@@ -24,4 +24,5 @@ jobs:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Log merge status
-        run: echo "✅ Auto-merge enabled for PR: ${{ github.event.pull_request.html_url }}"
+        run: |
+          echo "✅ Auto-merge enabled for PR: ${{ github.event.pull_request.html_url }}"