fix: Use GITLAB_TOKEN to authenticate CI lint test

What does this MR do?

Fixes test by using GITLAB_TOKEN to validate CI lint requests.

I tried CI_JOB_TOKEN but for some reason that doesn't seem to work 🤔 so I copied our token from our QA projects.

What are the relevant issue numbers?

Looks recent due to the addition of auth with gitlab-org/gitlab#294178 (closed)

Does this MR meet the acceptance criteria?

• Tests added for this feature/bug