I have Drupal 8.8.* and I would like to migrate to Drupal 9 using Drush 8. I know, we can use composer however I just wanted to confirm, whether we can do by using Drush command?
I tried using Drush but it's showing no updates available.
$ drush pm-update drupal-9.0.0 Update information last refreshed: Thu, 06/11/2020 - 11:42 Name Installed Version Proposed version Message Drupal 8.9.0 8.9.0 Specified version not found No code updates available.