[neon-notifications] Dev Required: qt6-multimedia - 6.6.3

[Neon CI]

https://build.neon.kde.org/job/watcher_release_qt6_qt6-multimedia/254/display/redirect

#<Debian::UScan::DEHS::Package:0x000055f68fdab458 @name="qt6-multimedia", @debian_uversion="6.6.2", @debian_mangled_uversion="6.6.2", @upstream_version="6.6.3", @upstream_url="https://qt-mirror.dannhauer.de/official_releases/qt/6.6/6.6.3/submodules/qtmultimedia-everywhere-src-6.6.3.tar.xz", @status="Newer version available">