chore(helm): update image docker.io/mbentley/omada-controller digest to d88c890 (#31850)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[docker.io/mbentley/omada-controller](https://redirect.github.com/mbentley/docker-omada-controller)
| digest | `d4d752e` -> `d88c890` |

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charts/stable/omada-controller/Chart.yaml

@@ -32,4 +32,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/omada-controller
   - https://hub.docker.com/r/mbentley/omada-controller
 type: application
-version: 16.7.2
+version: 16.7.3

charts/stable/omada-controller/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: docker.io/mbentley/omada-controller
-  tag: 5.15@sha256:d4d752e7b3abca652d28c7805f3df0f6cf1d5c1da5bb48182d8c6f6ab719f036
+  tag: 5.15@sha256:d88c8900dcb24567d110db87b7d083223ebf50bcacc5cc16e7068ae27a3b35e5
   pullPolicy: IfNotPresent
 service:
   main: