Removes dependency on containerd, as the userns package was migrated
to the github.com/moby/sys/userns module.
- full diff: https://github.com/docker/docker/compare/v27.1.1...f9522e5e96c3
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>