fix(tox): fix basepython for pypi-publish

3 jobs for topic/default/pypi-publish_fix in 2 minutes and 58 seconds (queued for 27 seconds)
Status Job ID Name Coverage
  Lint
passed #90783
check-manifest

00:00:55

passed #90784
flake8

00:00:22

 
  Test
passed #90785
py27

00:01:39