eecs: Use python 3.8
eecs: Use python 3.8

Let's keep EECS a bit on the bleeding edge.
Better to update this now than after semester starts

ryanlovett/datahub,berkeley-dsep-infra/datahub,berkeley-dsep-infra/datahub,ryanlovett/datahub,ryanlovett/datahub,berkeley-dsep-infra/datahub