chore(deps): update container image lscr.io/linuxserver/webtop to fedora-openbox@991cacb (#15748)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| lscr.io/linuxserver/webtop | digest | `667f76a` -> `991cacb` |

---

> [!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:eyJjcmVhdGVkSW5WZXIiOiIzNy44My4zIiwidXBkYXRlZEluVmVyIjoiMzcuODMuMyIsInRhcmdldEJyYW5jaCI6Im1hc3RlciJ9-->

charts/stable/webtop/values.yaml

@@ -72,7 +72,7 @@ ubuntuOpenBoxImage:
   pullPolicy: Always
 fedoraOpenBoxImage:
   repository: lscr.io/linuxserver/webtop
-  tag: fedora-openbox@sha256:667f76a4ce2d6cf2a1c72b28e683aaf9cc2ceda1c72ced4f34147f26e1153863
+  tag: fedora-openbox@sha256:991cacb54d51c0a126609cea8c465d686b9dbe06f386e464c2e42e87ffb44735
   pullPolicy: Always
 archOpenBoxImage:
   repository: lscr.io/linuxserver/webtop