[neon-notifications] Releasing: digikam - 8.7.0

[Neon CI]

https://build.neon.kde.org/job/watcher_release_neon-packaging_digikam/320/display/redirect

#<Debian::UScan::DEHS::Package:0x00007b602c7e75b8 @name="digikam", @debian_uversion="8.6.0", @debian_mangled_uversion="8.6.0", @upstream_version="8.7.0", @upstream_url="https://download.kde.internal.neon.kde.org/stable/digikam/8.7.0/digiKam-8.7.0.tar.xz", @status="Newer version available">