Upgrade to Artifact Registry

[matthiaswronka]

As far as I know, kaniko uses Google Container Registry to provide the official docker image.

kaniko is meant to be run as an image: gcr.io/kaniko-project/executor

As Google has deprecated GCR in favor of Artifact Registry I was wondering, if you already migrated to Artifact Registry and if one should use updated image-URLs.

The old gcr-repository notes that on upgrade should be performed:

https://console.cloud.google.com/gcr/images/kaniko-project