TSDB uses rolling release approach, and we cannot follow release cycle of the TSDB, to enable support in time for every new minor release which can break compatibility or introduce some new features or change syntax. 

The idea is to show how to lock-in on exact version number during installation of the timescaldb extension, for example on RHEL based systems: 

sudo dnf -y install 'dnf-command(versionlock)'

sudo dnf versionlock list

sudo dnf versionlock add --raw 'timescaledb-2-loader-postgresql-16-2.20.*'
sudo dnf versionlock add --raw 'timescaledb-2-postgresql-16-2.20.*'
sudo dnf versionlock add --raw 'timescaledb-tools-0.16.*'

sudo dnf versionlock list

This will limit timescaledb version to 2.20.x since Zabbix 7.0.18 is not released and 2.21 is not yet supported.

Also this will show example for users how to manage the problem, then they do upgrade of the system os security patching and remove repo configuration files or configure excludes for the whole packages.