Bump actions/deploy-pages from 2 to 4

Bumps [actions/deploy-pages](https://github.com/actions/deploy-pages) from 2 to 4.
- [Release notes](https://github.com/actions/deploy-pages/releases)
- [Commits](actions/deploy-pages@v2...v4)

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

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

.github/workflows/documentation.yml

@@ -118,4 +118,4 @@ jobs:
       - name: Deploy to GitHub Pages
         id: deployment
         if: github.event_name == 'push' && (startsWith(github.ref, 'refs/tags/') || github.ref == 'refs/heads/main')
-        uses: actions/deploy-pages@v2
+        uses: actions/deploy-pages@v4