Update pre-commit to 2.20.0#436

pyup-bot wants to merge 2 commits intodevelopinfOpen/cookiecutter-python-project:developfrom

pyup-update-pre-commit-2.6.0-to-2.20.0infOpen/cookiecutter-python-project:pyup-update-pre-commit-2.6.0-to-2.20.0Copy head branch name to clipboard