ci: Set sticky bit on /tmp
Our FIPS builds use RedHat's ubi8 as their base container image, rather Debian like standard builds. ubi8.6-990 introduces a bug where the sticky bit is no longer set on /tmp, breaking bundler.
Work around this issue by setting the sticky bit ourselves in the FIPS job.
Changelog: fixed
Edited by Will Chandler (ex-GitLab)