I am using Google Cloud Build to build the artifacts and deploy to GKE using gcloud deploy command in the cloud build as the final step by passing the build artifacts to it from the previous step. The cloud deploy starts the deployment process by calling cloud build again and fails immediately with an error: "building helm dependencies: exit status 1" and without further explanations.
I found that Skaffold returns this error "building helm dependencies: exit status 1" when it doesn't have access to Kubernetes. So the issue with Cloud Deploy can be access issue to the specified Kubernetes cluster.