[Bench] Run benchmarks' integration tests only on PR

Author: lukaszstolarczuk

devops/actions/run-tests/benchmark/action.yml

@@ -261,13 +261,15 @@ runs:
         ${{ inputs.dry_run == 'true' && '--dry-run' || '' }} \
 
       echo "::endgroup::"
-      
-      # Run integration tests
+  - name: "[PR] Run benchmarks' integration tests"
+    if: github.event_name == 'pull_request'
+    shell: bash
+    run: |
+      # Run benchmarks' integration tests
       # NOTE: Each integration test prints its own group name as part of test script
       export LLVM_BENCHMARKS_UNIT_TESTING=1
       export COMPUTE_BENCHMARKS_BUILD_PATH=$WORKDIR/compute-benchmarks-build
       python3 ./devops/scripts/benchmarks/tests/test_integration.py
-
   - name: Cache changes and upload github summary
     if: always()
     shell: bash