feat: add trove classifier for python 3.10 (#38)

Author: parthea

packages/google-cloud-audit-log/setup.py

@@ -46,6 +46,8 @@
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: Implementation :: CPython",
     ],
     description=description,