LibreOffice 7.1.6 is available for anyone on the workstation or server-gui channels. It will automatically be updated when autoupdate is run. This is a minor version update. You can apply the upgrade using the autoupdate utility.
Libreoffice 7.2 is automatically installed using the GUI installation tool from the jcchome-menu.
To manually install this version instead, you can run the following:
apt install libreoffice7.1* libobasis7.1-* -y
These are the packages directly from the Document Foundation.