chore(flux): update helm release longhorn 1.8.0 → 1.8.1 (clustertool) (#32873)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [longhorn](https://redirect.github.com/longhorn/longhorn)
([source](https://redirect.github.com/longhorn/charts)) | patch |
`1.8.0` -> `1.8.1` |

---

### Release Notes

<details>
<summary>longhorn/charts (longhorn)</summary>

###
[`v1.8.1`](https://redirect.github.com/longhorn/charts/releases/tag/longhorn-1.8.1)

[Compare
Source](https://redirect.github.com/longhorn/charts/compare/longhorn-1.8.0...longhorn-1.8.1)

Longhorn is a distributed block storage system for Kubernetes.

</details>

---

### Configuration

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rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
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---

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---

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clustertool/embed/generic/kubernetes/system/longhorn/app/helm-release.yaml

@@ -9,7 +9,7 @@ spec:
   chart:
     spec:
       chart: longhorn
-      version: 1.8.0
+      version: 1.8.1
       sourceRef:
         kind: HelmRepository
         name: longhorn