Tails intends to migrate away from KeePassXC to GNOME secrets. See https://gitlab.tails.boum.org/tails/tails/-/issues/19136.
This is likely to come in the next version of Tails (7.5) based on the Milestone the Tails team has applied to the issue.
We provide a template KeePassXC database for SecureDrop admins and journalists to use, since KeePassXC is included in Tails. We will have to install KeePassXC, probably just as a dependency of securedrop-admin.