Include python 3.12 to metadata

Author: antonwolfy

pyproject.toml

@@ -27,6 +27,7 @@ classifiers = [
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: Implementation :: CPython",
   "Topic :: Software Development",
   "Topic :: Scientific/Engineering",