Takomo 7.0 is a maintenance release with only one breaking change. Upgrading from 6.x should be straightforward.
Here is the breaking change introduced in Takomo 7.0.
Nodejs 20.11.0 is now required to run Takomo. This change makes it possible to keep upgrading project dependencies to their latest versions in the future.
Required actions
Upgrade your Nodejs to version 20.11.0 or later.