chore(ci): bump to peaceiris/actions-gh-pages@v4

Author: weihanglo

.github/workflows/rustdoc.yml

@@ -30,7 +30,7 @@ jobs:
       - run: cargo doc --no-deps --all-features 
 
       - name: Deploy Docs
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_branch: gh-pages