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

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

mypy/checkstrformat.py

@@ -13,8 +13,9 @@
 from __future__ import annotations
 
 import re
+from collections.abc import Iterator, Sequence
 from re import Match, Pattern
-from typing import Callable, Final, Iterator, Sequence, cast
+from typing import Callable, Final, cast
 from typing_extensions import TypeAlias as _TypeAlias
 
 import mypy.errorcodes as codes