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>

Author: dependabot[bot]

.github/workflows/docbuild.yaml

@@ -45,7 +45,7 @@ jobs:
           touch _build/html/.nojekyll
       - name: Deploy to gh-pages
         if: github.repository == 'project-chip/connectedhomeip' && github.event_name == 'push' && github.ref_name == 'master'
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           deploy_key: ${{ secrets.DOXYGEN_DEPLOY_KEY }}
           external_repository: project-chip/connectedhomeip-doc

.github/workflows/doxygen.yaml

@@ -98,7 +98,7 @@ jobs:
               id: extract_branch
             - name: Deploy if master
               if: steps.extract_branch.outputs.branch == 'master' && github.repository == 'project-chip/connectedhomeip'
-              uses: peaceiris/actions-gh-pages@v3
+              uses: peaceiris/actions-gh-pages@v4
               with:
                   deploy_key: ${{ secrets.DOXYGEN_DEPLOY_KEY }}
                   external_repository: project-chip/connectedhomeip-doc