Ubuntu has a good translation of this package, but Debian not.Causing difficulties for Debian users.
So I updated the translation to python-apt.
Hope to review it soon.
By the way, since Launchpad licenses their translation strings under a BSD license, I didn't copy launchpad's string content directly, just for reference.
Ubuntu 下游对 python-apt 的翻译很完善但 Debian 没有，给 Debian 用户使用带来了困难。
所以我更新了它的翻译。
希望能够尽快予以审查。
此外，由于 Launcchpad 采用 BSD 许可证授权它们的翻译字符串，因此我没有直接复制 launchpad 的字符串内容，仅仅是参考。
Luke Na 2023/04/11