Chess engine: Stockfish 22121917 NNUE for Windows and Linux (+2.19)

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Stockfish 22121917 - UCI chess engine, compiled by Mstembera
Rating CEDR=3748

Timestamp: 1671470109
Don't reset increaseDepth back to true after it has been set to false

Resetting increaseDepth back to true each time on the very next iteration was not intended so this is a bug fix and a simplification. See more discussion here #2482 (comment) Thanks to xoto10

STC: https://tests.stockfishchess.org/tests/view/6398c74693ed41c57ede7bfd
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 51128 W: 13543 L: 13220 D: 24365 Elo +2.19
Ptnml(0-2): 165, 5363, 14174, 5708, 154

LTC: https://tests.stockfishchess.org/tests/view/6399bcd393ed41c57edea750
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 290864 W: 77282 L: 77334 D: 136248 Elo -0.06
Ptnml(0-2): 107, 28127, 89029, 28049, 120

closes https://github.com/official-stockfish/Stockfish/pull/4288
bench: 3611278

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