Cancel in progress performance runs if a new commit has been pushed. … (#1964)

* Cancel in progress performance runs if a new commit has been pushed. Concurrency only cancels any pending runs.

.github/workflows/performance.yaml

@@ -42,7 +42,9 @@ on:
         required: true
         default: '-r'
 
-concurrency: "perftest-${{ github.head_ref ||  github.base_ref || 'schedule' }}"
+concurrency: 
+  group: "perftest-${{ github.head_ref ||  github.base_ref || 'schedule' }}"
+  cancel-in-progress: true
 
 jobs:
   release: