[pre-commit.ci] pre-commit autoupdate

[pre-commit-ci[bot]]

updates:

• github.com/asottile/setup-cfg-fmt: v1.20.1 → v2.0.0
• github.com/asottile/pyupgrade: v2.37.1 → v2.37.3
• github.com/PyCQA/flake8: 4.0.1 → 5.0.2
• github.com/pre-commit/mirrors-mypy: v0.961 → v0.971