Support Python 3.13 and drop Python 3.10 support. Create a new release once ready

[bobleesj]

To create a new release, follow the instructions in "Release Python package with GitHub Actions and tag" on GitLab. Simultaneously, in the "operation-release-everything" repository, cross off completed items under Phase 2. This process helps maintainers share and track progress.

[sbillinge]

Action items

• fix tests
• fix warnings
• update pyproject.toml
• pypi/github release
• conda release
• final check-off