Zabbix

...G...... [ZBX-22798] fixed incorrect output of vfs.file.contents when reading frequently modified file (dgoloscapov, vso)

Merge in ZBX/zabbix from feature/ZBX-22798-6.0 to release/6.0

* commit '91fae04c60a086b50b2cec07d1ed85c3dfddb17d':
  ...G...... [ZBX-22798] fixed memory error
  ...G...... [ZBX-22798] fixed trimming of newlines
  ...G...... [ZBX-22798] separated utf8 conversion from binary data retrieval
  ...G...... [ZBX-22798] fixed incorrect output of vfs.file.contents when reading frequently modified file

(cherry picked from commit baa97e6f5406e884773d746b9dcfeb25220617ec)