New TurnKey Roundup version (19.0)

Changes:

• Upgrade the base distribution to Debian 13/Trixie.
• Update Roundup to 2.6.0 from its verified official PyPI source distribution and use Debian packages for its Python runtime, MariaDB driver and timezone data.
• Replace the obsolete installer with a supervised updater that verifies PyPI release metadata and runs the tracker migration.
• Use Roundup's password API for the firstboot administrator credential.
• See the TurnKey Core 19.0 changelog for changes common to all appliances.

Links

• Release meta-files (signature, manifest)