setuptools & distutils: more accurate spawn method (#13036)

stdlib/distutils/ccompiler.pyi

@@ -165,7 +165,7 @@ class CCompiler:
     def execute(
         self, func: Callable[[Unpack[_Ts]], Unused], args: tuple[Unpack[_Ts]], msg: str | None = None, level: int = 1
     ) -> None: ...
-    def spawn(self, cmd: list[str]) -> None: ...
+    def spawn(self, cmd: Iterable[str]) -> None: ...
     def mkpath(self, name: str, mode: int = 0o777) -> None: ...
     @overload
     def move_file(self, src: StrPath, dst: _StrPathT) -> _StrPathT | str: ...