chore(deps): update peaceiris/actions-gh-pages action to v4

Author: renovate[bot]

.github/workflows/documentation.yml

@@ -68,7 +68,7 @@ jobs:
 
       - name: Deploy
         if: github.ref == 'refs/heads/master'
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./documentation/docs-gen