Zabbix

.......PS. [ZBX-24453] implemented socket file cleanup when shutting down, added blocking of signals during important stages of startup

Merge in ZBX/zabbix from feature/ZBX-24453-6.0 to release/6.0

* commit '1d46b2d0a8832956c80fc47b255e8f7264d4e454':
  .......... [ZBX-24453] fixed changelog
  .......... [ZBX-24453] added changelog
  ........S. [ZBX-24453] fixed sock removal
  .......PS. [ZBX-24453] added blocking of signals during dangerous stages of Server startup
  .......PS. [ZBX-24453] implemented socket file cleanup when shutting down
  .......PS. [ZBX-24453] implemented socket file cleanup when shutting down