Bump the actions group in /.github/workflows with 2 updates (#310)

Bumps the actions group in /.github/workflows with 2 updates: [actions/checkout](https://github.com/actions/checkout) and [actions/setup-python](https://github.com/actions/setup-python).

Updates `actions/checkout` from 6.0.2 to 7.0.0
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@de0fac2...9c091bb)

Updates `actions/setup-python` from 6.2.0 to 6.3.0
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@a309ff8...ece7cb0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
- dependency-name: actions/setup-python
  dependency-version: 6.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> 2cae3d8

Author: rossbar