add Python 3.12 support

setup.py

@@ -14,7 +14,6 @@ import os
 import platform
 import sys
 import setuptools
-import distutils.cmd
 from kindlecomicconverter import __version__
 
 NAME = 'KindleComicConverter'
@@ -23,7 +22,7 @@ VERSION = __version__
 
 
 # noinspection PyUnresolvedReferences
-class BuildBinaryCommand(distutils.cmd.Command):
+class BuildBinaryCommand(setuptools.Command):
     description = 'build binary release'
     user_options = []