Default Grafana Values are broken

The default grafana values are incompatible with the latest version of the upstream grafana charts.

For example, the monitoring values.yaml for this project has:

  # use IronBank image
  image:
    repository: registry1.dso.mil/ironbank/big-bang/grafana/grafana-plugins
    tag: 11.0.0
    pullSecrets:
    - private-registry

https://repo1.dso.mil/big-bang/product/packages/monitoring/-/blob/main/chart/values.yaml?ref_type=heads#L1084-L1089

In the upstream chart image references (for image:, sidecar: etc) have all been refactored to separate registry and repository:

image:
  # -- The Docker registry
  registry: docker.io
  # -- Docker image repository
  repository: grafana/grafana
  # Overrides the Grafana image tag whose default is the chart appVersion
  tag: ""
  sha: ""
  pullPolicy: IfNotPresent

This results in incorrectly rendered images in the deployment:

image: docker.io/registry1.dso.mil/ironbank/big-bang/grafana/grafana-plugins:10.4.2
image: quay.io/registry1.dso.mil/ironbank/kiwigrid/k8s-sidecar:1.26.1