Backport of #33318 to v1.56.x.
---
We just found out that our current Bazel setup does not support Python
3.11.
This PR updates some dependencies to allow using Bazel in Python 3.11.
Cython:
* Cython [backported Python 3.11 support change to
0.29x](https://github.com/cython/cython/issues/4500), but it appears
that the Cython version we are using in Bazel does not include the fix,
so we're using the latest stable version instead.
Gevent:
* The first version of gevent that supports [Python 3.11 is
22.08.0](https://github.com/gevent/gevent/issues/1903#issuecomment-1303227507).
#### Testing
* Tested locally using Python 3.11 virtual environment, was able to
reproduce the issue and verified that those changes were able to fix it.
a05e2e3bd2