...
You will automatically get the latest version, if the app is installed in your Confluence space. The app will only need an update under Manage Apps in Confluence.
Install Include GitLab for Confluence Cloud on the Atlassian Marketplace
Announcement
Added an in-app warning message regarding the license requirement as announced in the previous release. Existing users who have not purchased a license will see a message appearing in their GitLab macros.
...