Python 3.12 compatible when using latest tsdownsample from Github repo

Author: kb-

setup.py

@@ -20,6 +20,7 @@
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
     ],