cancel tests on new commit

.github/workflows/package.yaml

@@ -1,4 +1,10 @@
 name: package
+
+# Cancel in-progress runs when a new commit is pushed to the same branch/PR
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 on:
   push:
     branches: