Update ci.yml

Author: LichtenbergCode

.github/workflows/ci.yml

@@ -27,7 +27,7 @@ jobs:
           mkdocs build
 
       - name: Setup Pages
-        uses: actions/configure-pages@v3
+        uses: actions/configure-pages@v4
 
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v1