ci: align workflow concurrency with DeepCTR

Author: shenweichen

.github/workflows/ci.yml

@@ -17,6 +17,10 @@ on:
       - ".github/workflows/**"
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref_name }}
+  cancel-in-progress: true
+
 jobs:
   build:
     runs-on: ubuntu-22.04