[neon-notifications] Dev Required: libjxl-testdata - 0.0~git20231005.f7488f7

[Neon CI]

https://build.neon.kde.org/job/watcher_release_backports-jammy_libjxl-testdata/47/display/redirect

#<Debian::UScan::DEHS::Package:0x000055e52d8b68a8 @name="libjxl-testdata", @debian_uversion="0.0~git20230623.d0c6419", @debian_mangled_uversion="0.0~git20230623.d0c6419", @upstream_version="0.0~git20231005.f7488f7", @upstream_url="https://github.com/libjxl/testdata HEAD", @status="Newer version available">