[neon-notifications] Dev Required: qt6-webchannel - 6.8.2

[Neon CI]

https://build.neon.kde.org/job/watcher_release_qt6_qt6-webchannel/179/display/redirect

#<Debian::UScan::DEHS::Package:0x0000741a6a785480 @name="qt6-webchannel", @debian_uversion="6.8.1", @debian_mangled_uversion="6.8.1", @upstream_version="6.8.2", @upstream_url="https://qt-mirror.dannhauer.de/official_releases/qt/6.8/6.8.2/submodules/qtwebchannel-everywhere-src-6.8.2.tar.xz", @status="Newer version available">