[neon-notifications] kdevelop new version 5.4.2

[Neon CI]

https://build.neon.kde.org/job/watcher_release_extras_kdevelop/815/display/redirect

#<Debian::UScan::DEHS::Package:0x0000555e9c1b25d8 @name="kdevelop", @debian_uversion="5.4.1", @debian_mangled_uversion="5.4.1", @upstream_version="5.4.2", @upstream_url="http://download.kde.internal.neon.kde.org/stable/kdevelop/5.4.2/src/kdevelop-5.4.2.tar.xz", @status="Newer version available">