Fix Open-WebUI install and upgrade commands (#9461)

Author: camcop

ct/openwebui.sh

@@ -42,7 +42,7 @@ function update_script() {
 
     msg_info "Installing uv-based Open-WebUI"
     PYTHON_VERSION="3.12" setup_uv
-    $STD uv tool upgrade --python 3.12 open-webui[all]
+    $STD uv tool install --python 3.12 open-webui[all]
     msg_ok "Installed uv-based Open-WebUI"
 
     msg_info "Restoring data"
@@ -108,7 +108,7 @@ EOF
 
   msg_info "Updating Open WebUI via uv"
   PYTHON_VERSION="3.12" setup_uv
-  $STD uv tool install --python 3.12 open-webui[all]
+  $STD uv tool upgrade --python 3.12 open-webui[all]
   systemctl restart open-webui
   msg_ok "Updated Open WebUI"
   msg_ok "Updated successfully!"