update stub

Author: yunline

buildconfig/stubs/pygame/mixer.pyi

@@ -83,7 +83,7 @@ class Channel:
     def unpause(self) -> None: ...
     def fadeout(self, time: int) -> None: ...
     def queue(self, sound: Sound) -> None: ...
-    def set_source_location(self, angle:int, distance:int) -> None: ...
+    def set_source_location(self, angle:float, distance:float) -> None: ...
     @overload
     def set_volume(self, value: float) -> None: ...
     @overload