Dependency versions are fixed, downgrading Feast to 0.16

[creativedutchmen]

In the setup.py there is a hardcoded feast version with equality constraints (fixed at a specific version). This makes it impossible to use the latest version of Feast and the azure features in this repo - the two can't exist at the same time.

Please use more flexible versions for all dependencies - having them hardcoded like this also means it's impossible to install security updates or Bugfixes.