[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/PyCQA/flake8: 3.9.2 → 4.0.1](https://github.com/PyCQA/flake8/compare/3.9.2...4.0.1)
- [github.com/asottile/setup-cfg-fmt: v1.17.0 → v1.18.0](https://github.com/asottile/setup-cfg-fmt/compare/v1.17.0...v1.18.0)
- [github.com/pre-commit/mirrors-mypy: v0.910 → v0.910-1](https://github.com/pre-commit/mirrors-mypy/compare/v0.910...v0.910-1)