BinderHub Helm Chart with GCP Workflow Identity

I’m trying to install Binderhub on GKE via Helm, but I need to use GCP Workload Identity (Using Workload Identity  |  Kubernetes Engine Documentation) rather than using GCP Service account (via a json credential file as instructed here: 3. Set up BinderHub — BinderHub 0.1.0 documentation). Is that possible?