chore(deps): update kube-prometheus-stack docker tag to v81.3.0 (#3579)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [kube-prometheus-stack](https://github.com/prometheus-operator/kube-prometheus) ([source](https://github.com/prometheus-community/helm-charts)) | minor | `81.2.2` → `81.3.0` |

---

### Release Notes

<details>
<summary>prometheus-community/helm-charts (kube-prometheus-stack)</summary>

### [`v81.3.0`](https://github.com/prometheus-community/helm-charts/releases/tag/kube-prometheus-stack-81.3.0)

[Compare Source](https://github.com/prometheus-community/helm-charts/compare/kube-prometheus-stack-81.2.2...kube-prometheus-stack-81.3.0)

kube-prometheus-stack collects Kubernetes manifests, Grafana dashboards, and Prometheus rules combined with documentation and scripts to provide easy to operate end-to-end Kubernetes cluster monitoring with Prometheus using the Prometheus Operator.

#### What's Changed

- \[kube-prometheus-stack] Update kube-prometheus-stack dependency non-major updates by [@&#8203;renovate](https://github.com/renovate)\[bot] in [#&#8203;6543](https://github.com/prometheus-community/helm-charts/pull/6543)

**Full Changelog**: <https://github.com/prometheus-community/helm-charts/compare/alertmanager-1.31.3...kube-prometheus-stack-81.3.0>

</details>

---

### Configuration

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---

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---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0Mi42OS4yIiwidXBkYXRlZEluVmVyIjoiNDIuNjkuMiIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiaW1hZ2UiXX0=-->

Reviewed-on: #3579
Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net>
Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

clusters/cl01tl/helm/kube-prometheus-stack/Chart.lock

@@ -1,12 +1,12 @@
 dependencies:
 - name: kube-prometheus-stack
   repository: oci://ghcr.io/prometheus-community/charts
-  version: 81.2.2
+  version: 81.3.0
 - name: app-template
   repository: https://bjw-s-labs.github.io/helm-charts/
   version: 4.6.2
 - name: redis-replication
   repository: oci://harbor.alexlebens.net/helm-charts
   version: 1.0.1
-digest: sha256:b01c879a598b7fd36e37f3a65ca5d8f91713ac7e5250c3b00169783bc2d2a065
+digest: sha256:8f6bde0b3ccc1bc887c75649e95754650f2e44dd81ba77da6a06bf99ba1119e8
-generated: "2026-01-23T22:08:21.182689246Z"
+generated: "2026-01-28T22:14:04.638817848Z"

clusters/cl01tl/helm/kube-prometheus-stack/Chart.yaml

@@ -20,7 +20,7 @@ maintainers:
   - name: alexlebens
 dependencies:
   - name: kube-prometheus-stack
-    version: 81.2.2
+    version: 81.3.0
     repository: oci://ghcr.io/prometheus-community/charts
   - name: app-template
     alias: ntfy-alertmanager