fix(helm): update chart phpmyadmin to 16.2.5 (#6380)

| datasource | package    | from   | to     |
| ---------- | ---------- | ------ | ------ |
| helm       | phpmyadmin | 16.2.1 | 16.2.5 |

Co-authored-by: rosey-the-renovator-bot[bot] <98764075+rosey-the-renovator-bot[bot]@users.noreply.github.com>

Author: rosey-the-renovator-bot[bot]

kubernetes/main/apps/databases/phpmyadmin/app/helmrelease.yaml

@@ -11,7 +11,7 @@ spec:
     spec:
       # renovate: registryUrl=https://charts.bitnami.com/bitnami
       chart: phpmyadmin
-      version: 16.2.1
+      version: 16.2.5
       sourceRef:
         kind: HelmRepository
         name: bitnami-charts