chore(deps): update humhub by renovate (#20152)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/mriedmann/humhub-nginx | digest | `2ec9dee` -> `afb417b` |
|
[ghcr.io/mriedmann/humhub-phponly](https://togithub.com/mriedmann/humhub-docker)
| digest | `59f17e7` -> `b3d656b` |

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charts/stable/humhub/Chart.yaml

@@ -48,4 +48,4 @@ sources:
   - https://ghcr.io/mriedmann/humhub-nginx
   - https://ghcr.io/mriedmann/humhub-phponly
 type: application
-version: 7.15.12
+version: 7.15.14

charts/stable/humhub/values.yaml

@@ -1,11 +1,11 @@
 image:
   pullPolicy: IfNotPresent
   repository: ghcr.io/mriedmann/humhub-phponly
-  tag: 1.15.4@sha256:59f17e772723b7774631b7f960f7782519f541c17c40ac048e74bb470eef6abb
+  tag: 1.15.4@sha256:b3d656bcb60a7b8e5e052ec0bd0f2beecaeb3319fa7ec99af9ca498a0a633bec
 nginxImage:
   pullPolicy: IfNotPresent
   repository: ghcr.io/mriedmann/humhub-nginx
-  tag: 1.15.4@sha256:2ec9dee75520acb98973fcb458d8c243a2a0044315836cb05bcd372fa97acf09
+  tag: 1.15.4@sha256:afb417b4161a09ddaafdc2003f074b17099865be22d0547a76a731b213561344
 
 securityContext:
   container: