Zabbix

.......PS. [ZBX-23738] fixed Zabbix backend sources for libxml2 2.12.0 version changes

Merge in ZBX/zabbix from feature/ZBX-23738-6.4 to release/6.4

* commit 'b7c04ee4969d7e81d6247301b10047521536d2e4':
  .......PS. [ZBX-23738] fixed build script for libxml2 for wrong path
  .......PS. [ZBX-23738] fixed build script for libxml2
  .......PS. [ZBX-23738] fixed libxml2 build script
  .......PS. [ZBX-23738] fixed additional compilation warnings
  .D........ [ZBX-23738] fixed changelog
  .D........ [ZBX-23738] added changelog
  .......PS. [ZBX-23738] fixed libxml2.12.0 version changes