chore(deps): update humhub by renovate (#24817)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/mriedmann/humhub-nginx | digest | `409e162` -> `e4e0273` |
|
[ghcr.io/mriedmann/humhub-phponly](https://togithub.com/mriedmann/humhub-docker)
| digest | `d358e25` -> `af7109c` |

---

> [!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.

👻 **Immortal**: This PR will be recreated if closed unmerged. Get
[config help](https://togithub.com/renovatebot/renovate/discussions) if
that's undesired.

---

- [ ] <!-- 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:eyJjcmVhdGVkSW5WZXIiOiIzOC4xOS4wIiwidXBkYXRlZEluVmVyIjoiMzguMTkuMCIsInRhcmdldEJyYW5jaCI6Im1hc3RlciIsImxhYmVscyI6WyJhdXRvbWVyZ2UiLCJ1cGRhdGUvZG9ja2VyL2dlbmVyYWwvbm9uLW1ham9yIl19-->

charts/stable/humhub/Chart.yaml

@@ -47,4 +47,4 @@ sources:
   - https://ghcr.io/mriedmann/humhub-phponly
   - https://github.com/truecharts/charts/tree/master/charts/stable/humhub
 type: application
-version: 9.4.1
+version: 9.4.2

charts/stable/humhub/values.yaml

@@ -1,11 +1,11 @@
 image:
   pullPolicy: IfNotPresent
   repository: ghcr.io/mriedmann/humhub-phponly
-  tag: 1.16.1@sha256:d358e25ddf5f3cbede9969ecd9f8ad72ef0f9b7ac2c620b867dfb6f49079e925
+  tag: 1.16.1@sha256:af7109c5050f51bc95d97788c97da5de6b1c787ec6f4444d5991a930a81f5b24
 nginxImage:
   pullPolicy: IfNotPresent
   repository: ghcr.io/mriedmann/humhub-nginx
-  tag: 1.16.1@sha256:409e1621228841c857520c638f5d2ab8a81775627b2838b5370212ce6c9bb351
+  tag: 1.16.1@sha256:e4e0273f2150798cd1e402c3365a102c0649121aa2b74fd0c00d2f051623ade8
 
 securityContext:
   container: