How to make python 3(.7) default for CodeQL

Hi,

Does anyone know how to make the CodeQL Code scanning alerts action by default run python 3, preferably 3.7, by default and not install dependencies using python2?

See https://github.com/MirahezeBots/MirahezeBots/pull/319/checks?check_run_id=1446587420#step:3:64

It’s kind of ironic our CI is testing on a version we don’t support!!!