Based on documentation:
|PostgreSQL||13.0 - 14.X||Required if PostgreSQL is used as Zabbix backend database.|
|TimescaleDB for PostgreSQL||2.0.1-2.3||Required if TimescaleDB is used as Zabbix backend database. Make sure to install the distribution of TimescaleDB with the compression supported.|
There is misconception what you can install Zabbix with PostgreSQL 14 and TSDB.
But since PostgreSQL 14 supported only with TSDB 2.5 this setup will be officially unsupported and untested.