Zabbix

........S. [ZBX-20649] fixed crash when server attempted to use trigger after it was removed from cache

Merge in ZBX/zabbix from feature/ZBX-20649-5.4 to release/5.4

* commit '88bbee8c07f011d9780ad9121d7878ac7e2d61df':
  .D........ [ZBX-20649] added changelog entry
  ........S. [ZBX-20649] fixed item->triggers update on trigger removal