winsound: accepts buffers (#9108)

https://github.com/python/cpython/blob/b5f711185bd11819566068ddf2a74a1402340e2d/PC/winsound.c#L93

Author: JelleZijlstra

stdlib/winsound.pyi

@@ -1,4 +1,5 @@
 import sys
+from _typeshed import ReadableBuffer
 from typing import overload
 from typing_extensions import Literal
 
@@ -21,7 +22,7 @@ if sys.platform == "win32":
     def Beep(frequency: int, duration: int) -> None: ...
     # Can actually accept anything ORed with 4, and if not it's definitely str, but that's inexpressible
     @overload
-    def PlaySound(sound: bytes | None, flags: Literal[4]) -> None: ...
+    def PlaySound(sound: ReadableBuffer | None, flags: Literal[4]) -> None: ...
     @overload
-    def PlaySound(sound: str | bytes | None, flags: int) -> None: ...
+    def PlaySound(sound: str | ReadableBuffer | None, flags: int) -> None: ...
     def MessageBeep(type: int = ...) -> None: ...