In ZBXNEXT-4029, for version 6.0, passwords in zabbix have been made more secure.

Just to keep in mind - there were some related changes in following major release:
https://www.zabbix.com/documentation/6.2/en/manual/introduction/whatsnew620#secure-password-hashing
https://www.zabbix.com/documentation/current/en/manual/introduction/whatsnew640#secure-password-change

But there is still one option missing - limit users to use X previous passwords.
Such approach exists currently in many auth engines, so it's requested here to be added in zabbix too.