Zabbix

...G...PS. [ZBX-20236] improved memory consumption in Zabbix proxy trappers by moving configuration sync between database and cache to configuration syncer; improved trappers and listeners memory consumption by freeing received data after it was processed instead of after new data is received

Merge in ZBX/zabbix from feature/ZBX-20236-5.0 to release/5.0

* commit 'f9d83fe1dff2d2bfa0c7a18eccf7b58484c01c09':
  .D........ [ZBX-20236] added ChangeLog entry
  .......P.. [ZBX-20236] style fix
  .......P.. [ZBX-20236] fixed indentation
  .......P.. [ZBX-20236] improved passive Zabbix proxy memory consumption by moving configuration sync to configuration syncer