Is it possible to use the Backdrop version of Drush to update core (or Bee)?
https://backdropcms.org/project/drush
I believe that with Drupal you could run `drush pm-update drupal` to download the update and update the database.
Do we have a similar command?
Don't have one for Bee yet. Here's the issue for it: https://github.com/backdrop-contrib/bee/issues/111