build(deps): bump actions/checkout from 4.1.1 to 4.1.6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.1 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/v4.1.1...v4.1.6)

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

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

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ jobs:
     name: Run test suite
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v4.1.6
 
       # Run the tests
       - name: 'Run tests'