Import from collections.abc wherever possible (#7635)

stdlib/wsgiref/util.pyi

@@ -1,6 +1,7 @@
 import sys
 from _typeshed.wsgi import WSGIEnvironment
-from typing import IO, Any, Callable
+from collections.abc import Callable
+from typing import IO, Any
 
 __all__ = ["FileWrapper", "guess_scheme", "application_uri", "request_uri", "shift_path_info", "setup_testing_defaults"]