chore(deps): update container image nginx to 1.25.3@6eb9534 by renovate (#17798)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| nginx | digest | `4c0fdaa` -> `6eb9534` |

---

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

---

### Configuration

📅 **Schedule**: Branch creation - "before 10pm on monday" in timezone
Europe/Amsterdam, 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:eyJjcmVhdGVkSW5WZXIiOiIzNy4xNjguMiIsInVwZGF0ZWRJblZlciI6IjM3LjE2OC4yIiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIn0=-->

charts/stable/vikunja/Chart.yaml

@@ -29,7 +29,7 @@ home: https://truecharts.org/charts/stable/vikunja
 icon: https://truecharts.org/img/hotlink-ok/chart-icons/vikunja.png
 keywords:
   - vikunja
-kubeVersion: ">=1.24.0-0"
+kubeVersion: '>=1.24.0-0'
 maintainers:
   - name: TrueCharts
     email: info@truecharts.org
@@ -38,8 +38,8 @@ name: vikunja
 sources:
   - https://vikunja.io/docs
   - https://github.com/truecharts/charts/tree/master/charts/stable/vikunja
+  - https://hub.docker.com/_/nginx
   - https://hub.docker.com/r/vikunja/frontend
   - https://hub.docker.com/r/vikunja/api
-  - https://hub.docker.com/_/nginx
 type: application
-version: 12.1.17
+version: 12.1.18

charts/stable/vikunja/values.yaml

@@ -8,7 +8,7 @@ frontendImage:
   pullPolicy: IfNotPresent
 nginxImage:
   repository: nginx
-  tag: 1.25.3@sha256:4c0fdaa8b6341bfdeca5f18f7837462c80cff90527ee35ef185571e1c327beac
+  tag: 1.25.3@sha256:6eb953446a36ad7aaa1624ff7b0fba5c8f8742e13fbef572cda3cac202fcf4aa
 workload:
   main:
     podSpec: