CI review app: task-runner fails to start

Note that the Chart is trying to run the image registry.gitlab.com/gitlab-org/build/cng-mirror/gitlab-task-runner-ee:11692-geo-cron-job-to-perform-repository-checks-is-disabled-on:

$ kubectl describe pod review-11692-geo-fvi9xp-task-runner-57dfbc85b4-lmfwm --namespace review-apps-ee | grep BackOff
  Warning  Failed     4m59s (x4 over 6m5s)  kubelet, gke-review-apps-ee-preemptible-pool-1-aebfb756-jx29  Error: ImagePullBackOff
  Normal   BackOff    58s (x20 over 6m5s)   kubelet, gke-review-apps-ee-preemptible-pool-1-aebfb756-jx29  Back-off pulling image "registry.gitlab.com/gitlab-org/build/cng-mirror/gitlab-task-runner-ee:11692-geo-cron-job-to-perform-repository-checks-is-disabled-on"

/cc: @rymai