Support Python 3.11 By Bumping grpcio tools

[thomaschristopherking]

Problem to Solve

Support Python 3.11, currently using a version of grpcio tools that does not support python 3.11

Current Workaround

Use an older version of Python

Proposed Solution

Bump grpcio tools from 1.38 to 1.50 - See this closed ticket for when python 3.11 was supported: grpc/grpc#30445

Additional Information

Trying to install on python 3.11 causes this error:
distutils.errors.DistutilsPlatformError: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/

[alexjpwalker]

Fixed in:

• Depend on grpcio<2, protobuf<4 #275