Disutils is deprecated in Python 3.12

[Zsailer]

See https://docs.python.org/3.10/whatsnew/3.10.html#distutils

nbclassic depends on distutils to build:

nbclassic/setup.py

Lines 72 to 97 in 9ae4cb1

	from distutils.command.build_py import build_py
	from distutils.command.sdist import sdist
	from setuptools.command.bdist_egg import bdist_egg
	from setuptools.command.develop import develop
	class bdist_egg_disabled(bdist_egg):
	"""Disabled version of bdist_egg
	Prevents setup.py install from performing setuptools' default easy_install,
	which it should never ever do.
	"""
	def run(self):
	sys.exit("Aborting implicit building of eggs. Use `pip install .` to install from source.")
	setup_args['cmdclass'] = {
	'build_py': css_js_prerelease(
	check_package_data_first(build_py)),
	'sdist' : css_js_prerelease(sdist, strict=True),
	'develop': css_js_prerelease(develop),
	'css' : CompileCSS,
	'backendtranslations': CompileBackendTranslation,
	'js' : CompileJS,
	'jsdeps' : Bower,
	'jsversion' : JavascriptVersion,
	'bdist_egg': bdist_egg if 'bdist_egg' in sys.argv else bdist_egg_disabled,
	}

This means, in Python 3.13 (released last week), using the setup.py to build nbclassic will fail.

Can we try:

• adding Python 3.13 to our test matrix,
• removing the distutils portion...and possibly replace the setup.py(?) for pyproject.toml?