Production mixes change over time. Figure out a better way to keep things up to date

[Breakend]

Can we run a chron job to update from electricity map?

Or maybe we can update the averages directly using the parsers?

https://github.com/tmrowco/electricitymap-contrib/blob/2009ad04be124eec67651408b2d9292dd5bb36ba/parsers/EIA.py