Using gh pages action v4

Author: makaroni4

.github/workflows/deploy.yml

@@ -46,7 +46,7 @@ jobs:
 
       - name: Deploy to GitHub Pages
         if: github.ref == 'refs/heads/main'
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./dist