Clean up the analytics instance artifacts.yaml file.

In this MR we clean up the artifacts.yaml file from the Airflow analytics instance.

It boils down to removing all instances of refinery-job and refinery-hive, except the latest ones.

Lots of files are touched by this, since we have to bump all DAGs to use the respective latest artifacts.

This may break some pipelines considering that bugs could have been introduced in recent version of the artifacts, but, I think this risk is minor. If you think otherwise, please comment.

CCing a bunch of folks for reviews: @milimetric @joal @aqu @otto @ebysans