axon dependency conflict

[dacort]

axon bumped their exla/nx dependencies to 0.2.0 without bumping it's own version.

So when trying to run mix deps.get I get a version conflict. I was able to just comment out the exla and nx deps from mix.exs and it worked ok. But I was also following the blog post here: https://fly.io/phoenix-files/recognize-digits-using-ml-in-elixir/