This update for libxml2 fixes the following issues:
- CVE-2019-20388: Fixed a memory leak in xmlSchemaPreRun (bsc#1161521). - CVE-2020-7595: Fixed an infinite loop in an EOF situation (bsc#1161517). - CVE-2020-24977: Fixed a global-buffer-overflow in xmlEncodeEntitiesInternal (bsc#1176179). - Fixed invalid xmlns references due to CVE-2019-19956 (bsc#1172021).