chore(deps): update helm release grafana to v8.3.7

[p6r-renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
grafana (source)	HelmChart	patch	8.3.6 -> 8.3.7

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Release Notes

grafana/helm-charts (grafana)

### [`v8.3.7`](https://togithub.com/grafana/helm-charts/releases/tag/grafana-8.3.7) [Compare Source](https://togithub.com/grafana/helm-charts/compare/grafana-8.3.6...grafana-8.3.7) The leading tool for querying and visualizing time series and metrics. #### What's Changed - \[grafana] fix: do not create pvc manually when useStatefulSet by [@​fengxsong](https://togithub.com/fengxsong) in [https://github.com/grafana/helm-charts/pull/3244](https://togithub.com/grafana/helm-charts/pull/3244) #### New Contributors - [@​fengxsong](https://togithub.com/fengxsong) made their first contribution in [https://github.com/grafana/helm-charts/pull/3244](https://togithub.com/grafana/helm-charts/pull/3244) **Full Changelog**: https://github.com/grafana/helm-charts/compare/grafana-agent-operator-0.4.1...grafana-8.3.7

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Configuration

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This PR has been generated by Renovate Bot.