SUSE-SU-2019:2185-1 Security update for flatpak

This update for flatpak fixes the following issues: Security issues fixed: - CVE-2019-8308: Fixed a potential sandbox escape via /proc bsc1125431. - CVE-2019-11460: Fixed a compromised thumbnailer may escape the bubblewrap sandbox used to confine thumbnailers by using the TIOCSTI ioctl bsc1133043...