Use large VM for `repo_utils_job` (#21928)

upgrade to large VM
Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>

.circleci/create_circleci_config.py

@@ -387,7 +387,7 @@ repo_utils_job = CircleCIJob(
     ],
     parallelism=None,
     pytest_num_workers=1,
-    resource_class=None,
+    resource_class="large",
     tests_to_run="tests/repo_utils",
 )