The sound that plays when the turrets spot you is now the "You came at a bad time" audio clip from “How It’s Done” by Huntr/x (Huntrix) Kpop Demon Hunters.
OR
MG_Spotted folder from the CustomSounds folder into the CustomSounds folder within your plugins directory.-TurretSeePlayer
Metal_Gear_Turret_Sound By LethalMatt