docs/zh_CN: Add userspace-api/no_new_privs Chinese translation

Translate the following documents into Chinese:

- userspace-api/no_new_privs.rst

Signed-off-by: Rui Li <me@lirui.org>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/20221022120557.381115-1-me@lirui.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>