alpine-latest is not latest
registry.gitlab.com/gitlab-org/gitlab-runner/gitlab-runner-helper:alpine-latest-x86_64-v15.2.0 is using alpine 3.12 and not 3.15.
registry.gitlab.com/gitlab-org/gitlab-runner/gitlab-runner-helper:alpine-latest-x86_64-v15.2.0 is using alpine 3.12 and not 3.15.