[neon-notifications] libaqbanking new version 6.2.8

[Neon CI]

https://build.neon.kde.org/job/watcher_release_backports-focal_libaqbanking/76/display/redirect

#<Debian::UScan::DEHS::Package:0x00005579fa1668d0 @name="libaqbanking", @debian_uversion="6.2.6", @debian_mangled_uversion="6.2.6", @upstream_version="6.2.8", @upstream_url="https://www.aquamaniac.de/rdm/attachments/download/360/aqbanking-6.2.8.tar.gz", @status="Newer version available">