feat(helm-chart)!: Update Helm release nextcloud to 9.0.2

| datasource | package   | from  | to    |
| ---------- | --------- | ----- | ----- |
| helm       | nextcloud | 8.9.1 | 9.0.2 |

Author: angelnu-bot[bot]

apps/nextcloud/app/helmrelease.yaml

@@ -6,7 +6,7 @@ spec:
   chart:
     spec:
       chart: nextcloud
-      version: 8.9.1
+      version: 9.0.2
       sourceRef:
         kind: HelmRepository
         name: nextcloud