add trailing comma

Author: jaredmixpanel

setup.py

@@ -43,7 +43,7 @@ def find_version(*paths):
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
-        'Programming Language :: Python :: 3.12'
+        'Programming Language :: Python :: 3.12',
     ],
     keywords='mixpanel analytics',
     packages=find_packages(),