[neon-notifications] kcoreaddons new version 5.56.0

[Neon CI]

https://build.neon.kde.org/job/watcher_release_kde_kcoreaddons/330/display/redirect

#<Debian::UScan::DEHS::Package:0x000055f6d1255800 @name="kcoreaddons", @debian_uversion="5.55.0", @debian_mangled_uversion="5.55.0", @upstream_version="5.56.0", @upstream_url="https://download.kde.internal.neon.kde.org/stable/frameworks/5.56/kcoreaddons-5.56.0.tar.xz", @status="Newer version available">