The Automatic Updates included with Drupal CMS includes package manager. This means when we encounter a bug like 🐛 Package Manager throws exception when attempting to exclude private files when they are out of project root Active , we need to fix it not in core actually but in AU (which is then 🐛 Package Manager throws exception when attempting to exclude private files when they are out of project root (in AU) Active ) for it to take effect in Drupal CMS.
Ship with a version of AU without Package Manager?
Active
General
As of Drupal CMS 1.2.0, we ship with Automatic Updates 4.x, which does not include its own version of Package Manager, but instead relies on core.