Updated xz to 5.8.1#8868

Merged

hugovk merged 2 commits intopython-pillow:mainfrom

radarhere:xz_upgrade

Apr 12, 2025

Commits on Apr 4, 2025

Updated xz to 5.8.1, except on Windows x86
radarhere
committed

Commits on Apr 6, 2025

Added XZ_CLMUL_CRC:BOOL=OFF to allow Windows x86 to use xz 5.8.1
radarhere
committed