Upgrading grafana version to v9.0.5

I want to upgrade my Grafana up to version from v8 to v9.0.5, but still don’t see any information about how to do it.
I need to upgrade my helm charts with grafana values and change charts.yaml and values.yaml files where can I find this files.

Are these steps perfect? or need to change any?
helm repo update
helm search repo grafana
helm upgrade --version

Thank you!