Version bump for datasets to comply with python3.10

[m0re4u]

There was an issue with Python 3.10 where sacrerouge would fail to run, since it depends on this repo, which in itself installs a possibly broken datasets package. With this version bump, it should work again. The problematic datasets code was fixed in 1.16.1.

This would fix Sacrerouge issue 136: https://github.com/danieldeutsch/sacrerouge/issues/136