Zabbix

.......PS. [ZBX-25752] reduced memory allocations in preprocessing manager

Merge in ZBX/zabbix from feature/DEV-4405-7.5 to master

* commit 'e229b8467e321a50ff772a0ec5dbc0dedae88e33':
  .D........ [DEV-4405] added changelog entry
  ........S. [DEV-4405] fixed includes
  .......PS. [DEV-4405] fixed includes
  .......PS. [DEV-4405] reduced preprocessing allocations when syncing configuration
  .......PS. [DEV-4405] reduced preprocessing history allocations
  .......PS. [DEV-4405] updated diagnostics information to include finished tasks
  .......PS. [DEV-4405] fixed warnings
  .......PS. [DEV-4405] style fix
  .......PS. [DEV-4405] updated preprocessing queue slot cache calculations
  .......PS. [DEV-4405] updated diagnostics information to include peak finished and pending tasks
  .......PS. [DEV-4405] updated diagnostics information to include peak finished and pending tasks
  .......PS. [DEV-4405] updated diagnostics information to include peak finished and pending tasks
  .......PS. [DEV-4405] removed redundant allocations in preprocessing worker
  .......PS. [DEV-4405] reduced memory allocations in preprocessing output order tracking
  .......PS. [DEV-4405] added optional list item pool to lists to reduce number of allocations when inserting/removing from list