Update ci.yml

Author: weiguangcui

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
         run: bundle exec jekyll build --future
       - name: Upload artifact
         # Automatically uploads an artifact from the './_site' directory by default
-        uses: actions/upload-pages-artifact@v4
+        uses: actions/upload-pages-artifact@v3
 
   # Deployment job
   deploy: