Update default net to nnue-605ba0a75039.dat

Trained under the same conditions as the previous nets, but using a new loss function.
An additional term is added to the loss to penalise the score value even when the WDL term is very small. This helps to increase the returned score in already winning positions.

25k nodes/move
LLR:  2.95/2.94<0.00, 10.00> Elo diff: 7.17 [1.41, 12.94] (95%)
Games: 8431 W: 2647 L: 2474 D: 3310 Draw ratio: 39.3%
Pntl: [354, 993, 1398, 1065, 405]

STC:
LLR:  2.98/2.94<0.00, 10.00> Elo diff: 9.06 [2.46, 15.67] (95%)
Games: 2955 W: 442 L: 365 D: 2148 Draw ratio: 72.7%
Pntl: [26, 258, 843, 313, 37]

LTC:
LLR:  2.97/2.94<0.00, 10.00> Elo diff: 5.47 [1.17, 9.77] (95%)
Games: 4703 W: 499 L: 425 D: 3779 Draw ratio: 80.4%
Pntl: [20, 318, 1607, 380, 26]

Bench: 1671445

src/NNUE.hpp

@@ -2,7 +2,7 @@
 #include "Types.hpp"
 
 
-#define NNUE_Default_File "nnue-a4d91d7e8e4c.dat"
+#define NNUE_Default_File "nnue-605ba0a75039.dat"
 
 
 namespace NNUE