Docker as an underlying runtime is being deprecated. Docker-produced images will continue to work in your cluster with all runtimes, as they always have.
The Kubernetes community [has written a blog post about this in detail](https://blog.k8s.io/2020/12/02/dont-panic-kubernetes-and-docker/) with [a dedicated FAQ page for it](https://blog.k8s.io/2020/12/02/dockershim-faq/).

### External credential provider for client-go

- cloud.google.com/go/recommender: v1.9.0
- cloud.google.com/go/redis: v1.11.0
- cloud.google.com/go/resourcemanager: v1.7.0
- cloud.google.com/go/resourcesettings: v1.5.0
- cloud.google.com/go/retail: v1.12.0
- cloud.google.com/go/run: v0.9.0
- cloud.google.com/go/scheduler: v1.9.0
- cloud.google.com/go/secretmanager: v1.10.0
- cloud.google.com/go/security: v1.13.0
- cloud.google.com/go/securitycenter: v1.19.0