One more approach to update your existing project :
Download project zip from here.
After downloading the project extract zip file.
Now, copy uvdesk folder from extracted folder->vendor->uvdesk from this location.
First, delete the uvdesk folder from your_project->vendor->uvdesk location.
Now, copy uvdesk foder from extracted folder and paste into your project under vendor folder.
Also replace your translation folder from extracted zip folder into your project.
Check below screenshot for reference the folder you need to replace in your project from extracted zip folder
Finally run the following commands:
php bin/console d:s:u --force
php bin/console c:c