Add app update task.

roles/nextcloud/tasks/main.yml

@@ -236,7 +236,16 @@
   changed_when: cmd_result.stdout is not search('Nothing to do.')
   when: allow_download
 
-## app installations:
+## app updates and installations:
+- name: update apps
+  command: "sudo -u www-data php ./occ app:update --all"
+  args:
+    chdir: "{{ nc_dir }}"
+    warn: False
+  register: cmd_result
+  changed_when: cmd_result.stdout | length > 0
+  when: allow_download
+
 - name: install extra apps
   command: "sudo -u www-data php ./occ app:install {{ item }}"
   args: