add concurrency group to all-green ci job (#5196)

Author: rochdev

.github/workflows/all-green.yml

@@ -9,6 +9,10 @@ on:
     - cron: 20 4 * * *
     - cron: 40 4 * * *
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
 
   all-green: