feat(ci): add testing with Python 3.13

[nijel]

Proposed changes

Expect failures right now as this will most likely unveil issues in the dependency chain.

Checklist

• Lint and unit tests pass locally with my changes.
• I have added tests that prove my fix is effective or that my feature works.
• I have added documentation to describe my feature.
• I have squashed my commits into logic units.
• I have described the changes in the commit messages.

Other information

Known issues:

• Build Python 3.13 wheels sirfz/tesserocr#357
• Feature request: Support for pre-release versions of Python 3.13 grpc/grpc#34922, Add templating and support for Python 3.13 grpc/grpc#37643
• Wheels for Python 3.13 pydantic/jiter#144 / add builds for 3.13 wheels pydantic/jiter#145
• Python 3.13 support G-Research/ahocorasick_rs#104 / Python 3.13 support G-Research/ahocorasick_rs#105
• Python 3.13 wheels xmlsec/python-xmlsec#327