Fix localhost delegate for third-party prep check

roles/environment/tasks/main.yml

@@ -161,6 +161,7 @@
             else playbook_dir + '/' + thirdparty_preparation_tasks_path
           }}
       delegate_to: localhost
+      connection: local
       run_once: true
       register: environment_thirdparty_tasks_stat
       changed_when: false