Update GITLAB_PAGES_VERSION in variables file during CNG release
Related to gitlab-org/build/CNG!553 (merged). We are now building a GitLab Pages image in CNG, and we need to track it from GitLab project, like we do many other GitLab components.
Related to gitlab-org/build/CNG!553 (merged). We are now building a GitLab Pages image in CNG, and we need to track it from GitLab project, like we do many other GitLab components.