bump upload-pages-artifact

Author: logonoff

.github/workflows/deploy-to-ghpages.yml

@@ -47,7 +47,7 @@ jobs:
         uses: actions/configure-pages@v5
 
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           path: '.' # upload entire directory