Bump actions/checkout from 4.1.2 to 4.1.4

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.2 to 4.1.4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4.1.2...v4.1.4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/gh-pages.yml

@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/[email protected].2
+        uses: actions/[email protected].4
       - name: Setup Ruby
         uses: ruby/[email protected]
         with: