fix(gitlab-ci): disable check_latest_tag_in_changelog job

The "check_latest_tag_in_changelog" job is useful if releases are being manually managed but in the world of release-it, it's unnecessary.

This wouldn't be a problem except that the current check [1] doesn't like release-it's changelog.

[1] https://gitlab.developers.cam.ac.uk/uis/devops/continuous-delivery/ ci-templates/-/blob/master/auto-devops/ check-latest-tag-in-changelog.yml?ref_type=heads#L17