Allow future imports in CI

[neubig]

Currently I believe that CI disallows future imports, which means that we have to add a noqa like this:

from __future__ import annotations # noqa FI58

In general, we should avoid requiring systematic noqas, instead allowing this by global rules. We can adjust the linting config to allow this.

[zhaochenyang20]

Sure. Let me try to find a way to do this. 🤔