For GOS 20.08 a new patch level is available:
https://www.greenbone.net/en/roadmap-lifecycle/
This maintenance release fixes several open issues for GOS 20.08. With GOS 20.08.7, the GOS 20.08 release moves to the “Mature” lifecycle status. Please refer to the Roadmap & Lifecycle page for a full list of changes.
In total GOS 20.08.7 covers 19 improvements.