Purpose

GitHub Actions deprecates ubuntu-20.04 image. The image will be fully unsupported by 2025-04-01.
Here is more information: actions/runner-images#11101

This PR changes the version of Ubuntu runner to the latest LTS release 24.04.

Does this introduce a breaking change?

[ ] Yes
[x] No

Does this require changes to learn.microsoft.com docs?

[ ] Yes
[x] No

Type of change

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[x] Other... Please describe: Dependency upgrade

Code quality checklist

See CONTRIBUTING.md for more details.

• The current tests all pass (python -m pytest).
• I added tests that prove my fix is effective or that my feature works
• I ran python -m pytest --cov to verify 100% coverage of added lines
• I ran python -m mypy to check for type errors
• I either used the pre-commit hooks or ran ruff and black manually on my code.