GitHub Actions(deps): Bump peaceiris/actions-gh-pages from 3 to 4 (#290)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Thomas Weber <[email protected]>

.github/workflows/ci.yml

@@ -51,7 +51,7 @@ jobs:
           MAVEN_OPTS: -Djansi.force=true
       - name: Publish Nightly Update Site
         if: github.event_name != 'release' && github.ref == 'refs/heads/main' && github.repository_owner == 'vitruv-tools' && matrix.os == 'ubuntu-latest'
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           deploy_key: ${{ secrets.UPDATE_SITE_DEPLOY_KEY }}
           external_repository: vitruv-tools/updatesite
@@ -62,7 +62,7 @@ jobs:
           user_email: 'github-actions[bot]@users.noreply.github.com'
       - name: Publish Release Update Site
         if: github.event_name == 'release' && github.repository_owner == 'vitruv-tools' && matrix.os == 'ubuntu-latest'
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           deploy_key: ${{ secrets.UPDATE_SITE_DEPLOY_KEY }}
           external_repository: vitruv-tools/updatesite