chore(deps): bump peaceiris/actions-gh-pages from 3 to 4

Bumps [peaceiris/actions-gh-pages](https://github.com/peaceiris/actions-gh-pages) from 3 to 4.
- [Release notes](https://github.com/peaceiris/actions-gh-pages/releases)
- [Changelog](https://github.com/peaceiris/actions-gh-pages/blob/main/CHANGELOG.md)
- [Commits](peaceiris/actions-gh-pages@v3...v4)

---
updated-dependencies:
- dependency-name: peaceiris/actions-gh-pages
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/tests.yml

@@ -38,7 +38,7 @@ jobs:
       - name: 'Deploy'
         if: |
           github.ref == 'refs/heads/main' && github.event.repository.fork == false
-        uses: 'peaceiris/actions-gh-pages@v3'
+        uses: 'peaceiris/actions-gh-pages@v4'
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./build