`review-docs-deploy` fails when triggerer doesn't have permission to create pipelines in gitlab-docs (i.e. no merge-to-master permission)

Now that we use CI_JOB_TOKEN to trigger gitlab-docs downstream pipelines, if the triggerer doesn't have merge-to-master permission in gitlab-docs, the deployment fails.

I've tried using the gitlab-docs project token in !57727 (merged) but this still fails, even though the token's bot user has maintainer permission... 🤔