[neon-notifications] Dev Required: zxing-cpp - 2.1.0

[Neon CI]

https://build.neon.kde.org/job/watcher_release_backports-jammy_zxing-cpp-jammy/361/display/redirect

#<Debian::UScan::DEHS::Package:0x000055f40946c078 @name="zxing-cpp", @debian_uversion="2.0.0", @debian_mangled_uversion="2.0.0", @upstream_version="2.1.0", @upstream_url="https://github.com/zxing-cpp/zxing-cpp/archive/refs/tags/v2.1.0.tar.gz", @status="Newer version available">