Test edx-enterprise on Python 3.11

[feanil]

This repository is a depedency of edx-platform and needs to be upgraded to Python 3.11 before the Readwood release is cut (mid-April).

• [ ] Requirements are compiled with Python 3.8
• [ ] Tests are run on Python 3.8 and 3.11
• [ ] (Optional) Tests are also run with 3.12 and passing or 3.12 issues are ticketed.
• [ ] Classifiers in setup.py setup.cfg or pyproject.toml indicate Python 3.11 support
• [ ] A new version is release to PyPI
• [ ] A PR is merged to edx-platform to use the new version