Security updates for Friday

Security updates have been issued by Debian (python-babel), Fedora (golang-github-opencontainers-image-spec and libmysofa), openSUSE (hiredis), Oracle (firefox and thunderbird), Red Hat (thunderbird and virt:8.2 and virt-devel:8.2), Scientific Linux (thunderbird), SUSE (kernel-rt and xen), and Ubuntu (firefox).