* Bump to actions/checkout v6 everywhere * Add a note about security * Not persisting credentials is still valuable * Fix bad indentation * Improve wording, remove link to PyPA guides Co-Authored-By: Joe Rickerby <1244307+joerick@users.noreply.github.com> --------- Co-authored-by: Joe Rickerby <1244307+joerick@users.noreply.github.com>