chore: add concurrency check to actions workflow

Author: gigamaax

.github/workflows/test.yml

@@ -11,6 +11,10 @@ on:
       - created
       - edited
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 defaults:
   run:
     shell: bash