chore: add backup to weblate role

roles/weblate/tasks/install.yml

@@ -7,6 +7,9 @@
       log_type: "install"
     when: not ansible_check_mode
 
+  - import_role:
+      name: _app_backup
+
   - name: Create of update let'encrypt certificate
     import_role:
       name: _letsencrypt_certificate