Zabbix

.......PS. [ZBX-25984] improved handling of NoSuchObject and NoSuchInstance responses in SNMP checks

Merge in ZBX/zabbix from feature/ZBX-25984-7.3-1 to master

* commit 'e988eef83ef109f61d2459c783c97e9f003e1f05':
  .......... [ZBX-25984] added changelog
  .......... [ZBX-25984] fixed coding style
  .......PS. [ZBX-25984] fixed SNMP NoSuchObject, NoSuchInstance and empty response handling