Bump setuptools to 71.0.* (#12381)

stubs/setuptools/setuptools/dist.pyi

@@ -1,4 +1,4 @@
-from collections.abc import Iterable, Iterator, Mapping, MutableMapping
+from collections.abc import Iterable, Iterator, MutableMapping
 from typing import Any
 
 from . import Command, SetuptoolsDeprecationWarning
@@ -7,7 +7,6 @@ from ._distutils.dist import Distribution as _Distribution
 __all__ = ["Distribution"]
 
 class Distribution(_Distribution):
-    def patch_missing_pkg_info(self, attrs: Mapping[str, Any]) -> None: ...
     src_root: str | None
     dependency_links: list[str]
     setup_requires: list[str]

stubs/setuptools/setuptools/extern/__init__.pyi

@@ -1,20 +0,0 @@
-from collections.abc import Generator, Iterable, Sequence
-from importlib.machinery import ModuleSpec
-from types import ModuleType
-
-class VendorImporter:
-    root_name: str
-    vendored_names: set[str]
-    vendor_pkg: str
-    def __init__(self, root_name: str, vendored_names: Iterable[str] = (), vendor_pkg: str | None = None) -> None: ...
-    @property
-    def search_path(self) -> Generator[str, None, None]: ...
-    def load_module(self, fullname: str) -> ModuleType: ...
-    def create_module(self, spec: ModuleSpec) -> ModuleType: ...
-    def exec_module(self, module: ModuleType) -> None: ...
-    def find_spec(
-        self, fullname: str, path: Sequence[str] | None = None, target: ModuleType | None = None
-    ) -> ModuleSpec | None: ...
-    def install(self) -> None: ...
-
-names: tuple[str, ...]