[neon-notifications] Dev Required: xsimd - 12.1.1

[Neon CI]

https://build.neon.kde.org/job/watcher_release_backports-jammy_xsimd-jammy/305/display/redirect

#<Debian::UScan::DEHS::Package:0x00005556569cb4c0 @name="xsimd", @debian_uversion="11.1.0", @debian_mangled_uversion="11.1.0", @upstream_version="12.1.1", @upstream_url="https://github.com/xtensor-stack/xsimd/archive/refs/tags/12.1.1.tar.gz", @status="Newer version available">