Bump crazy-max/ghaction-github-pages from 3 to 4

Bumps [crazy-max/ghaction-github-pages](https://github.com/crazy-max/ghaction-github-pages) from 3 to 4.
- [Release notes](https://github.com/crazy-max/ghaction-github-pages/releases)
- [Commits](crazy-max/ghaction-github-pages@v3...v4)

---
updated-dependencies:
- dependency-name: crazy-max/ghaction-github-pages
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/ci.yml

@@ -119,7 +119,7 @@ jobs:
         touch build/html/.nojekyll
     - name: Deploy documentation
       if: github.event_name == 'push' && matrix.os == 'ubuntu-latest' && matrix.python-version == 3.11
-      uses: crazy-max/ghaction-github-pages@v3
+      uses: crazy-max/ghaction-github-pages@v4
       with:
         target_branch: gh-pages
         build_dir: docs/build/html