chore(deps): update harbor.alexlebens.net/images/site-documentation docker tag to v0.15.0 (#5405)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [harbor.alexlebens.net/images/site-documentation](https://gitea.alexlebens.dev/alexlebens/site-documentation) | minor | `0.14.0` → `0.15.0` |

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### Release Notes

<details>
<summary>alexlebens/site-documentation (harbor.alexlebens.net/images/site-documentation)</summary>

### [`v0.15.0`](https://gitea.alexlebens.dev/alexlebens/site-documentation/releases/tag/0.15.0)

[Compare Source](https://gitea.alexlebens.dev/alexlebens/site-documentation/compare/0.14.0...0.15.0)

### [0.15.0](http://gitea-http.gitea:3000/alexlebens/site-documentation/compare/0.14.0...0.15.0) (2026-04-02)

##### Features

- add more apps ([3ce50ce](http://gitea-http.gitea:3000/alexlebens/site-documentation/commit/3ce50ceccd12c8059f3c5146f6c0ad90d75c47b7))

</details>

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### Configuration

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

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

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

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

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This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
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Reviewed-on: #5405
Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net>
Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

clusters/cl01tl/helm/site-documentation/values.yaml

@@ -11,7 +11,7 @@ site-documentation:
         main:
           image:
             repository: harbor.alexlebens.net/images/site-documentation
-            tag: 0.14.0
+            tag: 0.15.0
             pullPolicy: IfNotPresent
           resources:
             requests: