I need to upgrade Bootstrap 7.x-3.12 to 7.x-3.22. Drupal 7.x was not installed with Composer. I don’t have access to the server to install Drush or Composer. Without these developer tools, how do I upgrade to the current Bootstrap? Can I use the Admin UI, Reports > Available Updates > Install New Module or Theme? Or use ftp to copy unzipped Bootstrap directory on my PC to the server directory /drupal/sites/all/themes/bootstrap/?