SUSE-SU-2021:1840-2 Security update for xstream

This update for xstream fixes the following issues: - Upgrade to 1.4.16 - CVE-2021-21351: remote attacker to load and execute arbitrary code bsc1184796 - CVE-2021-21349: SSRF can lead to a remote attacker to request data from internal resources bsc1184797 - CVE-2021-21350: arbitrary code executio...