ISTWCMS-6746: Update Drush to version 11.
Drush version 11 is the one to support Drupal 9 and Drupal 10. This is temporary, once we move to Drupal 10, we will need to upgrade to Drush 12.
On or around 4:30pm on Tuesday the 15th of July, git.uwaterloo.ca will be restarted to apply security and application patches. This maintenance should bring GitLab to version 18.1.2.
Drush version 11 is the one to support Drupal 9 and Drupal 10. This is temporary, once we move to Drupal 10, we will need to upgrade to Drush 12.