ci(github-actions): add "3.13-dev" to Python tests (#1145)

[jakob-keller]

Description

Checklist

• [ ] Add test cases to all the changes you introduce
• [ ] Run ./scripts/format and ./scripts/test locally to ensure this change passes linter check and test
• [ ] Test the changes on the local machine manually
• [ ] Update the documentation for the changes

Expected behavior

GitHub Actions will run tests for Python 3.13 (dev).

Steps to Test This Pull Request

Additional context

closes #1145