Add ref to push workflow concurrency group

To help distinguish from tag builds

.github/workflows/build_push.yml

@@ -7,7 +7,7 @@ on:
       - v*
 
 concurrency:
-  group: ${{ github.workflow }}
+  group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
 jobs: