Bump actions/setup-python from 5.6.0 to 6.0.0 (#318)

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 5.6.0 to 6.0.0.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v5.6.0...v6.0.0)

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