Cancel progress on branches on new push

Author: ValentaTomas

.github/workflows/fc-versions.yml

@@ -4,6 +4,10 @@ on:
   push:
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 permissions:
   id-token: write
   contents: write