CS: GO update from 01/07/2020 (v1.37.3.6)

Changelog:

[ Agents ]

• Updated Balkan, FBI, and ST6 sleeve textures to closer match 3rd person model.

[ Danger Zone ]

• Added a death notice icon for stomp damage.

[ Misc ]

• Fixed a rare server crash during Guardian wave restarts;
• Disabled holiday mode;
• Fixed startmovie sound not being synchronized with the images;
• Added support for recording sound with surround sound devices, channels are recorded as mixed originally by the game.