GHA: bump actions/checkout from 4.1.4 to 4.1.6

GHA: bump actions/checkout from 4.1.4 to 4.1.6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.4 to 4.1.6.
- [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/0ad4b8fadaa221de15dcec353f45205ec38ea70b...a5ac7e51b41094c92402da3b24376905380afc29)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Closes #13720