Add positional-only marker to methodkey and typedmethodkey

Author: ashm-dev

stubs/cachetools/cachetools/keys.pyi

@@ -4,6 +4,6 @@ from collections.abc import Hashable
 __all__ = ("hashkey", "methodkey", "typedkey", "typedmethodkey")
 
 def hashkey(*args: Hashable, **kwargs: Hashable) -> tuple[Hashable, ...]: ...
-def methodkey(self: Unused, *args: Hashable, **kwargs: Hashable) -> tuple[Hashable, ...]: ...
+def methodkey(self: Unused, /, *args: Hashable, **kwargs: Hashable) -> tuple[Hashable, ...]: ...
 def typedkey(*args: Hashable, **kwargs: Hashable) -> tuple[Hashable, ...]: ...
-def typedmethodkey(self: Unused, *args: Hashable, **kwargs: Hashable) -> tuple[Hashable, ...]: ...
+def typedmethodkey(self: Unused, /, *args: Hashable, **kwargs: Hashable) -> tuple[Hashable, ...]: ...