Update _TimedCache.

Author: tkem

stubs/cachetools/cachetools/__init__.pyi

@@ -50,7 +50,12 @@ class RRCache(Cache[_KT, _VT]):
     def choice(self) -> Callable[[Sequence[_KT]], _KT]: ...
 
 class _TimedCache(Cache[_KT, _VT]):
-    def __init__(self, maxsize: float, timer: Callable[..., _TT], getsizeof: Callable[[_VT], float] | None): ...
+    @overload
+    def __init__(self, maxsize: float, timer: Callable[[], _TT] = ..., getsizeof: None = None): ...
+    @overload
+    def __init__(self, maxsize: float, timer: Callable[[], _TT], getsizeof: Callable[[_VT], float]): ...
+    @overload
+    def __init__(self, maxsize: float, timer: Callable[[], _TT] = ..., *, getsizeof: Callable[[_VT], float]): ...
 
     class _Timer:
         def __init__(self, timer: Callable[[], _TT]) -> None: ...