Update to KDE Frameworks 5.104.0 & Update libjxl to 0.8.1
Update libjxl to 0.8.1
JPEGXL_ENABLE_JPEGLI_LIBJPEG is disabled. It is a potential future replacement for libjpeg.so, but it not finished yet.
Update to KDE Frameworks 5.104.0
Merge branch 'qt5.15lts-21.08' into qt5.15lts-22.08