Windows integration tests don't work with security MRs as the docker images are pushed to the security registry
In https://gitlab.com/gitlab-org/security/gitlab-runner/-/merge_requests/38 we can see that we push to registry.gitlab.com/gitlab-org/security/gitlab-runner/gitlab-runner-helper:x86_64-095f181e-servercore1809 but the integration tests look for an image with a tag registry.gitlab.com/gitlab-org/gitlab-runner/gitlab-runner-helper:x86_64-095f181e-servercore1809.
This works in the canonical repo as we use the same repository in both places there.