[neon-notifications] Releasing: kdegraphics-thumbnailers-5 - 24.12.3

[Neon CI]

https://build.neon.kde.org/job/watcher_release_neon-packaging_kdegraphics-thumbnailers-5/205/display/redirect

#<Debian::UScan::DEHS::Package:0x0000784aaf6a1950 @name="kdegraphics-thumbnailers-5", @debian_uversion="24.12.2", @debian_mangled_uversion="24.12.2", @upstream_version="24.12.3", @upstream_url="http://download.kde.internal.neon.kde.org/stable/release-service/24.12.3/src/kdegraphics-thumbnailers-24.12.3.tar.xz", @status="Newer version available">