[Python-buildbots] buildmaster-config default branch becomes "main"

Hi,

I renamed https://github.com/python/buildmaster-config default branch to "main".

If you have a local checkout, you can rename your local "master" branch with these commands:

git branch -m master main git fetch origin git branch -u origin/main main git remote set-head origin -a

For the branch rename rationale, see: https://sfconservancy.org/news/2020/jun/23/gitbranchname/

I just updated the psf-salt job: https://github.com/python/psf-salt/commit/443dfd7a9d6e28f469df39a8894c9fd96c...

Victor

Night gathers, and now my watch begins. It shall not end until my death.