chore(t8s-cluster/dependencies): update common docker tag to v1.6.0 (#1811)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [common](https://redirect.github.com/teutonet/teutonet-helm-charts)
([source](https://redirect.github.com/teutonet/teutonet-helm-charts/tree/HEAD/charts/common))
| minor | `1.5.0` -> `1.6.0` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

---

### Release Notes

<details>
<summary>teutonet/teutonet-helm-charts (common)</summary>

###
[`v1.6.0`](https://redirect.github.com/teutonet/teutonet-helm-charts/blob/HEAD/charts/common/CHANGELOG.md#160-2025-11-21)

[Compare
Source](https://redirect.github.com/teutonet/teutonet-helm-charts/compare/common-v1.5.0...common-v1.6.0)

##### Features

- **common/helm:** add option to set namespace of HelmRepository
([#&#8203;1757](https://redirect.github.com/teutonet/teutonet-helm-charts/issues/1757))
([6efd87b](https://redirect.github.com/teutonet/teutonet-helm-charts/commit/6efd87b1cd1c032170e8d02138b007ee6c8c754c))

</details>

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charts/t8s-cluster/Chart.lock

@@ -1,6 +1,6 @@
 dependencies:
 - name: common
   repository: oci://ghcr.io/teutonet/teutonet-helm-charts
-  version: 1.5.0
-digest: sha256:49ccdf297a2ee79953f2ce17bf654a74a9515e3228e62ac33bd295f121485de4
-generated: "2025-06-16T13:16:21.516811373Z"
+  version: 1.6.0
+digest: sha256:0f776ae52b8621ad00a7e99cf5a3afb95a849f004eb39a4ebe60bbe820a7102b
+generated: "2025-11-27T09:33:55.962538857Z"

charts/t8s-cluster/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 dependencies:
   - name: common
     repository: oci://ghcr.io/teutonet/teutonet-helm-charts
-    version: 1.5.0
+    version: 1.6.0
 description: t8s-operator cluster with necessary addons
 home: https://teuto.net
 icon: https://teuto.net/favicon.ico