fix: switch to GitLab FIPS container naming conventions
GitLab uses a tag suffix of -fips
for FIPS images. We should follow
that convention.
See https://docs.gitlab.com/ee/development/fips_compliance.html#:~:text=Now%20create%20charts.yml%20in%20the%20location%20specified%20above%20and%20specify%20tags%20with%20a%20%2Dfips%20suffix. for more details.
Additionally, the existing process is breaking since it's referring to an invalid project. See https://gitlab.com/gitlab-com/gl-infra/terra-transformer/-/jobs/7983792342 for details.
Edited by Andrew Newdigate