Update network to berserk-d43206fe90e4.nn

Bench: 3063057

Network trained (two separate iterations) after removing
Sep 2023 data from the master dataset.

Elo   | 1.50 +- 1.81 (95%)
SPRT  | 60.0+0.60s Threads=1 Hash=64MB
LLR   | 2.41 (-2.25, 2.89) [0.00, 2.50]
Games | N: 63290 W: 14360 L: 14087 D: 34843
Penta | [68, 7039, 17154, 7320, 64]
http://chess.grantnet.us/test/35971/

Elo   | 1.56 +- 1.72 (95%)
SPRT  | 60.0+0.60s Threads=1 Hash=64MB
LLR   | 2.90 (-2.25, 2.89) [0.00, 2.50]
Games | N: 70432 W: 16059 L: 15742 D: 38631
Penta | [74, 7768, 19208, 8099, 67]
http://chess.grantnet.us/test/35997/

src/makefile

@@ -3,8 +3,8 @@ EXE      = berserk
 SRC      = attacks.c bench.c berserk.c bits.c board.c eval.c history.c move.c movegen.c movepick.c perft.c random.c \
 		   search.c see.c tb.c thread.c transposition.c uci.c util.c zobrist.c nn/accumulator.c nn/evaluate.c pyrrhic/tbprobe.c
 CC       = clang
-VERSION  = 20240318
-MAIN_NETWORK = berserk-1794ba44a3ac.nn
+VERSION  = 20240324
+MAIN_NETWORK = berserk-d43206fe90e4.nn
 EVALFILE = $(MAIN_NETWORK)
 DEFS     = -DVERSION=\"$(VERSION)\" -DEVALFILE=\"$(EVALFILE)\" -DNDEBUG