downgrade version for upload-pages (#3)

address pipeline docs artifact issue

Author: iantsednv

.github/workflows/docs.yml

@@ -80,7 +80,7 @@ jobs:
           echo "Build validation successful"
 
       - name: Upload Pages artifact
-        uses: actions/upload-pages-artifact@v4
+        uses: actions/upload-pages-artifact@v3
         with:
           path: site