[neon-notifications] Dev Required: xsimd - 14.0.0

[Neon CI]

https://build.neon.kde.org/job/watcher_release_backports-noble_xsimd/416/display/redirect

#<Debian::UScan::DEHS::Package:0x00007d93ee50ddb8 @name="xsimd", @debian_uversion="13.0.0", @debian_mangled_uversion="13.0.0", @upstream_version="14.0.0", @upstream_url="https://github.com/xtensor-stack/xsimd/archive/refs/tags/14.0.0.tar.gz", @status="Newer version available">