[ci] when releasing in backport context, latest fips docker images are overwritten

## Description

OpenCTI docker images are built on tags, and pushed to dockerhub and GH.
 
When the tag is the most recent version, "latest" docker tags are updated to this version.

Issue: for FIPS images, there is no check that the tag version released is really the most recent one before pushing docker "latest" tags. This check is present for regular images.