Bump peaceiris/actions-gh-pages from 3 to 4 (#324)

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

Author: dependabot[bot]

.github/workflows/maven-release.yml

@@ -34,7 +34,7 @@ jobs:
             ./target/bettergui*.jar
             CHANGELOG.md
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./target/site/apidocs