update for libyaml
This update fixes the following security issue with libyaml:
- bnc#860617: Fixed heap based buffer overflow due to integer misuse (CVE-2013-6393)
- Submitted by Stefan Lijewski (lijews)
Fixed bugs
bnc#860617
VUL-0: CVE-2013-6393: libyaml: heap based buffer overflow due to integer misuse