[neon-notifications] Dev Required: libpinyin - 2.9.91

[Neon CI]

https://build.neon.kde.org/job/watcher_release_backports-jammy_libpinyin/27/display/redirect

#<Debian::UScan::DEHS::Package:0x00007f3535adc700 @name="libpinyin", @debian_uversion="2.8.1", @debian_mangled_uversion="2.8.1", @upstream_version="2.9.91", @upstream_url="https://qa.debian.org/watch/sf.php/libpinyin/libpinyin-2.9.91.tar.gz", @status="Newer version available">