Currently for Cloud Run deployer, skaffold grabs default active GCP auth configured to do the deployment [1].

In a shared CICD platform commonly uses service account impersonation to achieve cross project deployment, we'd like to have the support to use impersonated service account for Cloud Run deployment.

May I know if there's any plan of supporting this? Happy to drop a PR if there's no major concern of using impersonated service account for GCP deployment.

[1|https://github.com/GoogleContainerTools/skaffold/blob/f460879efa2e0c2c6d14a193791c9483001f149f/pkg/skaffold/gcp/auth.go#L75