added Python :: 3.12

Author: Andrei

src/setup.py

@@ -129,6 +129,7 @@ def run(self):
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "Framework :: AsyncIO",
         "Operating System :: Unix",
         "Operating System :: Microsoft :: Windows",