StatamicUpdated
Statamic\Events\StatamicUpdated
    
    Fired when the Updater has completed, either through the Control Panel or the command line.
public $events = [StatamicUpdated::class => 'handle'];
public function handle(StatamicUpdated $event)
{
    $event->version;          // The current/new version of Statamic.
    $event->previousVersion;  // The version Statamic was updated from.
}