Raise minimum Drupal version to 10.2

The merge request implements a minimum Drupal version of 10.2, as this is the lowest version still receiving security support. See https://endoflife.date/drupal

After consultation with the other maintainers, we have decided to only support Drupal 10.2+ and PHP 8.2+.

Thanks!

Automatically closed - issue fixed for 2 weeks with no activity.