feat(helm-chart): update helm release loki to 6.5.0 (#509)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [loki](https://grafana.github.io/helm-charts)
([source](https://togithub.com/grafana/helm-charts)) | minor | `6.4.2`
-> `6.5.0` |

---

### Release Notes

<details>
<summary>grafana/helm-charts (loki)</summary>

###
[`v6.5.0`](https://togithub.com/grafana/helm-charts/releases/tag/helm-loki-6.5.0)

Helm chart for Grafana Loki in simple, scalable mode

Source commit:
grafana/loki@2855c5a

Tag on source:
https://github.com/grafana/loki/releases/tag/helm-loki-6.5.0

</details>

---

### Configuration

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are satisfied.

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rebase/retry checkbox.

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---

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---

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kubernetes/main/apps/monitoring/loki/app/helmrelease.yaml

@@ -10,7 +10,7 @@ spec:
   chart:
     spec:
       chart: loki
-      version: 6.4.2
+      version: 6.5.0
       sourceRef:
         kind: HelmRepository
         name: grafana