Add missing python version to pyproject.toml qualifiers (#411)

Author: sobolevn

pyproject.toml

@@ -18,6 +18,8 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Operating System :: OS Independent",
     "Intended Audience :: Developers",
     "Topic :: System :: Networking",