Change grafana helm chart and version.

[LiuYuWei]

PR checklist

• [ X ] Ensure you have added or ran the appropriate tests for your PR.
• [ X ] DCO signed

What type of PR is this? bug

What this PR does / why we need it: Cannot use ./primehub/install/primehub-install create prometheus

Which issue(s) this PR fixes: 30815

Special notes for your reviewer: Change to prometheus-community/kube-prometheus-stack and version: "45.7.1"

Does this PR introduce a user-facing change?:

Change the Grafana helm chart and version.

[hlb]

LGTM