Security updates for Monday
Security updates have been issued by Debian (knot-resolver and libpgjava), Fedora (booth, dotnet3.1, expat, nheko, php-twig, php-twig2, php-twig3, poppler, python-joblib, and seamonkey), Mageia (colord, dbus, enlightenment, kitty, libvncserver, php, python3, and unbound), Slackware (libksba), SUSE (cyrus-sasl, ImageMagick, and xmlgraphics-commons), and Ubuntu (nginx and thunderbird).