Replace isort with ruff

kitty_tests/main.py

@@ -13,7 +13,16 @@ from contextlib import contextmanager
 from functools import lru_cache
 from tempfile import TemporaryDirectory
 from typing import (
-    Any, Callable, Dict, Generator, Iterator, List, NoReturn, Optional, Sequence, Set,
+    Any,
+    Callable,
+    Dict,
+    Generator,
+    Iterator,
+    List,
+    NoReturn,
+    Optional,
+    Sequence,
+    Set,
     Tuple,
 )