feat(helm): update grafana ( 8.3.7 → 8.4.0 )

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
grafana (source)	minor	8.3.7 -> 8.4.0

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Release Notes

grafana/helm-charts (grafana)

### [`v8.4.0`](https://togithub.com/grafana/helm-charts/releases/tag/grafana-8.4.0) [Compare Source](https://togithub.com/grafana/helm-charts/compare/grafana-8.3.8...grafana-8.4.0) The leading tool for querying and visualizing time series and metrics. #### What's Changed - \[grafana] add value to make extraConfigmapMounts and extraSecretMounts optional by [@​tibuntu](https://togithub.com/tibuntu) in [https://github.com/grafana/helm-charts/pull/3250](https://togithub.com/grafana/helm-charts/pull/3250) #### New Contributors - [@​tibuntu](https://togithub.com/tibuntu) made their first contribution in [https://github.com/grafana/helm-charts/pull/3250](https://togithub.com/grafana/helm-charts/pull/3250) **Full Changelog**: https://github.com/grafana/helm-charts/compare/loki-distributed-0.79.2...grafana-8.4.0 ### [`v8.3.8`](https://togithub.com/grafana/helm-charts/releases/tag/grafana-8.3.8) [Compare Source](https://togithub.com/grafana/helm-charts/compare/grafana-8.3.7...grafana-8.3.8) The leading tool for querying and visualizing time series and metrics. #### What's Changed - \[grafana] Update Helm test annotations to new format by [@​ibakshay](https://togithub.com/ibakshay) in [https://github.com/grafana/helm-charts/pull/3251](https://togithub.com/grafana/helm-charts/pull/3251) #### New Contributors - [@​ibakshay](https://togithub.com/ibakshay) made their first contribution in [https://github.com/grafana/helm-charts/pull/3251](https://togithub.com/grafana/helm-charts/pull/3251) **Full Changelog**: https://github.com/grafana/helm-charts/compare/tempo-distributed-1.15.3...grafana-8.3.8

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