typing: GObject: Improve Property hints

src/gi-stubs/repository/GObject.pyi

@@ -2274,22 +2274,22 @@ class PollFD(GBoxed):
 class Property:
     def __init__(
         self,
-        getter: Optional[Callable] = None,
-        setter: Optional[Callable] = None,
-        type: Type = None,
+        getter: Optional[Callable[[Any], Any]] = None,
+        setter: Optional[Callable[[Any, Any], None]] = None,
+        type: Type[Any] | None = None,
         default: Any = None,
         nick: str = "",
         blurb: str = "",
         flags: int = PARAM_READWRITE,
         minimum: Any = None,
         maximum: Any = None,
-    ): ...
-    def __call__(self, fget: Callable) -> Property: ...
-    def __get__(self, instance: Object, klass: Any): ...
-    def __set__(self, instance: Object, value: Any): ...
+    ) -> None: ...
+    def __call__(self, fget: Callable[[Any], Any]) -> Property: ...
+    def __get__(self, instance: Object, klass: Any) -> Any: ...
+    def __set__(self, instance: Object, value: Any) -> None: ...
     def get_pspec_args(self): ...
-    def getter(self, fget: Callable) -> Property: ...
-    def setter(self, fset: Callable) -> Property: ...
+    def getter(self, fget: Callable[[Any], Any]) -> Property: ...
+    def setter(self, fset: Callable[[Any, Any], None]) -> Property: ...
 
 class PtrArray(GBoxed): ...
 class Rand(GBoxed): ...