[pre-commit.ci] auto fixes from pre-commit.com hooks

Author: pre-commit-ci[bot]

scripts/typecheck_tests.py

@@ -5,7 +5,7 @@
 from argparse import ArgumentParser
 from collections import defaultdict
 from distutils import dir_util, spawn
-from typing import List, Pattern, Union, DefaultDict
+from typing import DefaultDict, List, Pattern, Union
 
 from scripts.git_helpers import git_checkout_drf
 from scripts.paths import DRF_SOURCE_DIRECTORY, PROJECT_DIRECTORY, STUBS_DIRECTORY