Update hugo.yaml

Author: jacopouggeri

.github/workflows/hugo.yaml

@@ -61,7 +61,7 @@ jobs:
             --minify \
             --baseURL "${{ steps.pages.outputs.base_url }}/"          
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v4
+        uses: actions/upload-pages-artifact@v2
         with:
           path: ./public