accept protobuf 6.31.1

Author: satsumas

setup.py

@@ -26,7 +26,7 @@
         'grpcio-tools>=1.53.0,<1.64.0',
         'python-dotenv',
         'param',
-        'protobuf>=4.21.12,<6.31.1'
+        'protobuf>=4.21.12,<=6.31.1'
     ],
     extras_require={
         'dev': [