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

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src/_pytest/python_api.py

@@ -7,8 +7,8 @@
 from types import TracebackType
 from typing import Any
 from typing import Callable
-from typing import ContextManager
 from typing import cast
+from typing import ContextManager
 from typing import List
 from typing import Mapping
 from typing import Optional