Update publish.yml

bump actiion version

Author: mloubout

.github/workflows/publish.yml

@@ -63,7 +63,7 @@ jobs:
           rm -rf examples
 
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v2
+        uses: actions/upload-pages-artifact@v3
         with:
           path: '_site'