Chart does not accept GovCloud regions

[aoggz]

I'm providing the following value to the chart when we deploy cloudzero-agent chart to EKS clusters in us-gov-west-1:

cloudzero-agent:
  region: us-gov-west-1

and the chart rendering is failing with this error:

Failed to load target state: failed to generate manifest for source 1 of 1: rpc error: code = Unknown desc = Manifest generation error (cached): failed to execute helm template command: failed to get command args to log: `helm template . ... --namespace cloudzero --kube-version 1.34.9 --values <path to cached source>/chart/values.yaml --values <path to cached source>/chart/values/clouds/aws.yaml --values /tmp/fcc73d54-b02a-43b6-9ddd-c21431a42aa2 <api versions removed> --include-crds` failed exit status 1: Error: values don't meet the specifications of the schema(s) in the following chart(s): cloudzero-agent: - at '/region': 'oneOf' failed, none matched - at '/region': 'us-gov-west-1' does not match pattern '^(([a-z]+-[a-z]+-?[0-9]+)|([a-z]{4,}[0-9]*))$' - at '/region': got string, want null

It appears that the helm values schema does not accept AWS GovCloud regions as valid.