Update bench.yml

Author: tusharmath

.github/workflows/bench.yml

@@ -12,7 +12,8 @@ permissions:
   issues: write
 jobs:
   build:
-    runs-on: benchmarking-runner
+    runs-on: 
+      group: benchmarking-runner
     if: github.event.head_commit.message != 'Update performance results in README.md'
     env:
       GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}