Import distutils after setuptools to avoid warning

Setuptools started warning about importing distutils before setuptools in version 49.2.0.

check_manifest.py

@@ -31,13 +31,15 @@
 import unicodedata
 import zipfile
 from contextlib import closing, contextmanager
-from distutils.text_file import TextFile
 from typing import List, Optional, Union
 from xml.etree import ElementTree as ET
 
 import toml
 from setuptools.command.egg_info import translate_pattern
 
+# import distutils after setuptools to avoid a warning
+from distutils.text_file import TextFile
+
 
 __version__ = '0.43.dev0'
 __author__ = 'Marius Gedminas <marius@gedmin.as>'