Update nextcloud values to follow mariadb upgrade

flux2/apps/nextcloud/nextcloud-values-configmap.yaml

@@ -87,10 +87,12 @@ data:
 
       # Enable and configure MariaDB chart
       mariadb:
-        db:
+        auth:
           password: "${nextcloud_mariadb_password}"
+          rootPassword: "${nextcloud_mariadb_root_password}"
         enabled: true
-        master:
+        architecture: standalone
+        primary:
           annotations:
             # Let the backup system include nextcloud database data.
             backup.velero.io/backup-volumes: "data"
@@ -105,10 +107,6 @@ data:
             requests:
               cpu: 100m
               memory: 256Mi
-        replication:
-          enabled: false
-        rootUser:
-          password: "${nextcloud_mariadb_root_password}"
 
     apps:
       - name: sociallogin