Fix deploy so my previous PR goes through

[MarkKremer]

The deployment github action doesn't work right now because Github deprecated set-path used by the Hugo deploy action. You can see the error here: https://github.com/gorgonia/gorgonia.github.io/runs/2294144853

This should be fixed by bumping this version number to a newer version according to the reply to this issue. If that has any side-effects, I don't know.

[owulveryck]

Let’s give it a try.
Thank you