distutils & setuptools: Relax path related params (#11948)

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>

stdlib/distutils/util.pyi

@@ -5,7 +5,7 @@ from typing import Any, Literal
 def get_host_platform() -> str: ...
 def get_platform() -> str: ...
 def convert_path(pathname: str) -> str: ...
-def change_root(new_root: str, pathname: str) -> str: ...
+def change_root(new_root: StrPath, pathname: StrPath) -> str: ...
 def check_environ() -> None: ...
 def subst_vars(s: str, local_vars: Mapping[str, str]) -> None: ...
 def split_quoted(s: str) -> list[str]: ...