More pywin32 stub completion (#9308)

Completed based on usage of the following libraries in mypy_primer:
- apprise
- comtypes
As well as some of the most popular libraries that use both pywin32 and mypy (all over 1k stars on github):
- certbot
- anki
- flexget
- monkey
- twisted
- salt

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

stubs/setuptools/setuptools/__init__.pyi

@@ -1,5 +1,5 @@
 from abc import abstractmethod
-from collections.abc import Iterable, Mapping
+from collections.abc import Iterable, Mapping, Sequence
 from distutils.core import Command as _Command
 from typing import Any
 
@@ -34,7 +34,7 @@ def setup(
     packages: list[str] = ...,
     py_modules: list[str] = ...,
     scripts: list[str] = ...,
-    ext_modules: list[Extension] = ...,
+    ext_modules: Sequence[Extension] = ...,
     classifiers: list[str] = ...,
     distclass: type[Distribution] = ...,
     script_name: str = ...,

stubs/setuptools/setuptools/_distutils/core.pyi

@@ -1,4 +1,4 @@
-from collections.abc import Mapping
+from collections.abc import Mapping, Sequence
 from distutils.cmd import Command as Command
 from distutils.dist import Distribution as Distribution
 from distutils.extension import Extension as Extension
@@ -19,7 +19,7 @@ def setup(
     packages: list[str] = ...,
     py_modules: list[str] = ...,
     scripts: list[str] = ...,
-    ext_modules: list[Extension] = ...,
+    ext_modules: Sequence[Extension] = ...,
     classifiers: list[str] = ...,
     distclass: type[Distribution] = ...,
     script_name: str = ...,