Security update for nginx

Open Source Vulnerabilities openSUSE-SU-2019:2120-1

This update for nginx fixes the following issues: Security issues fixed: - CVE-2019-9511: Fixed a denial of service by manipulating the window size and stream prioritization (bsc#1145579). - CVE-2019-9513: Fixed a denial of service caused by resource loops (bsc#1145580). - CVE-2019-9516: Fixed a denial of service caused by header leaks (bsc#1145582). - CVE-2018-16845: Fixed denial of service and memory disclosure via mp4 module (bsc#1115015). - CVE-2018-16843: Fixed excessive memory consumption in HTTP/2 implementation (bsc#1115022). - CVE-2018-16844: Fixed excessive CPU usage via flaw in HTTP/2 implementation (bsc#1115025). This update was imported from the SUSE:SLE-15-SP1:Update update project.