Does Work Spaces 20.05 support Higher versions of JM/SDK

Does work spaces 20.05 support a JM/SDK version higher than 20.05?

We had a client tell us that they heard that Work spaces supported versions of JM lower than it's version but not versions of JM higher.

Seemed a bit odd b/c the Temenos docs just say Workspaces 20.05 support JM 19.11+

We want to upgrade our JM version to 21.11.x but keep the Work Spaces version at 20.05 for now. Will that have potentional issues?