ANU LMS requires outdated field_group ^3

Problem/Motivation

Field Group in version 3 is no longer supported and strongly recommended to be upgraded to version 4.
ANU LMS requires the Field Group module in version 3 and therefore blocks the necessary update of the Field Group module.

Steps to reproduce

Try "composer update" of a drupal installation containing ANU LMS.

Proposed resolution

Alter the "require"-entry in composer.json to
"drupal/field_group": "^4.0",