Postgresql93 was updated to 9.3.18 to fix the following issues:
The changelog for the release is here:
<a href="https://www.postgresql.org/docs/9.3/static/release-9-3-18.html">https://www.postgresql.org/docs/9.3/static/release-9-3-18.html</a>
This update was imported from the SUSE:SLE-12:Update update project.