CI: update busybox image to fix CI

[zhangguanzhang]

# skopeo list-tags docker://registry.k8s.io/busybox
{
    "Repository": "registry.k8s.io/busybox",
    "Tags": [
        "1.24",
        "1.27",
        "1.27.2",
        "latest"
    ]
}
# docker pull registry.k8s.io/busybox
Using default tag: latest
latest: Pulling from busybox
[DEPRECATION NOTICE] Docker Image Format v1 and Docker Image manifest version 2, schema 1 support is disabled by default and will be removed in an upcoming release. Suggest the author of registry.k8s.io/busybox:latest to upgrade the image to the OCI Format or Docker Image manifest v2, schema 2. More information at https://docs.docker.com/go/deprecated-image-specs/
$ docker pull registry.k8s.io/busybox:1.27
1.27: Pulling from busybox
Digest: sha256:545e6a6310a27636260920bc07b994a299b6708a1b26910cfefd335fdfb60d2b
Status: Image is up to date for registry.k8s.io/busybox:1.27
registry.k8s.io/busybox:1.27

[k8s-ci-robot]

Hi @zhangguanzhang. Thanks for your PR.

I'm waiting for a google member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[Creatone]

/ok-to-test

[Creatone]

LGTM