chore(deps): bump the ci-dependencies group across 1 directory with 2 updates (#2234)

Bumps the ci-dependencies group with 2 updates in the / directory: [actions/checkout](https://github.com/actions/checkout) and [rlespinasse/github-slug-action](https://github.com/rlespinasse/github-slug-action).


Updates `actions/checkout` from 5 to 6
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v5...v6)

Updates `rlespinasse/github-slug-action` from 5.3.0 to 5.4.0
- [Release notes](https://github.com/rlespinasse/github-slug-action/releases)
- [Commits](https://github.com/rlespinasse/github-slug-action/compare/v5.3.0...v5.4.0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: ci-dependencies
- dependency-name: rlespinasse/github-slug-action
  dependency-version: 5.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: ci-dependencies
...

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