Import from collections.abc wherever possible (#7635)

stdlib/multiprocessing/synchronize.pyi

@@ -1,9 +1,10 @@
 import sys
 import threading
+from collections.abc import Callable
 from contextlib import AbstractContextManager
 from multiprocessing.context import BaseContext
 from types import TracebackType
-from typing import Any, Callable
+from typing import Any
 from typing_extensions import TypeAlias
 
 __all__ = ["Lock", "RLock", "Semaphore", "BoundedSemaphore", "Condition", "Event"]