chore(deps): update container image grafana/grafana to v11.1.5@f4796c6 by renovate (#25589)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| grafana/grafana | patch | `11.1.4` -> `11.1.5` |

---

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

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

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

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Renovate
Bot](https://togithub.com/renovatebot/renovate).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOC41NS40IiwidXBkYXRlZEluVmVyIjoiMzguNTUuNCIsInRhcmdldEJyYW5jaCI6Im1hc3RlciIsImxhYmVscyI6WyJhdXRvbWVyZ2UiLCJ1cGRhdGUvZG9ja2VyL2dlbmVyYWwvbm9uLW1ham9yIl19-->

charts/premium/grafana/Chart.yaml

@@ -6,7 +6,7 @@ annotations:
   truecharts.org/min_helm_version: "3.11"
   truecharts.org/train: premium
 apiVersion: v2
-appVersion: 11.1.4
+appVersion: 11.1.5
 dependencies:
   - name: common
     version: 24.1.5
@@ -37,4 +37,4 @@ sources:
   - https://hub.docker.com/r/grafana/grafana
   - https://quay.io/kiwigrid/k8s-sidecar
 type: application
-version: 17.2.7
+version: 17.2.8

charts/premium/grafana/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: grafana/grafana
   pullPolicy: IfNotPresent
-  tag: 11.1.4@sha256:886b56d5534e54f69a8cfcb4b8928da8fc753178a7a3d20c3f9b04b660169805
+  tag: 11.1.5@sha256:f4796c6227f4acb0b0dfef12edc2c732f60f18f65a6cf005313700c0896aaa30
 
 sidecarImage:
   repository: quay.io/kiwigrid/k8s-sidecar