Add GitHub Actions workflow for refreshing data

[cthoyt]

This PR does the following:

1. Adds tox configuration for refreshing the data

   pip install tox tox-poetry
   tox -e refresh

2. Adds a GitHub Actions workflow that wraps tox (with an eye on simplicity). It can be run with manual dispatch, or if desired the cron job can be uncommented
3. Canonicalizes ordering of outputs on refresh