[pre-commit.ci] pre-commit autoupdate
[pre-commit.ci] pre-commit autoupdate

updates:
- git://github.com/pre-commit/pre-commit-hooks: v3.4.0 → v4.0.1
- [github.com/pycqa/isort: 5.7.0 → 5.8.0](https://github.com/pycqa/isort/compare/5.7.0...5.8.0)
- [github.com/psf/black: 20.8b1 → 21.6b0](https://github.com/psf/black/compare/20.8b1...21.6b0)
- [github.com/asottile/blacken-docs: v1.9.1 → v1.10.0](https://github.com/asottile/blacken-docs/compare/v1.9.1...v1.10.0)
- https://gitlab.com/pycqa/flake8 → https://github.com/PyCQA/flake8
- [github.com/PyCQA/flake8: 3.8.4 → 3.9.2](https://github.com/PyCQA/flake8/compare/3.8.4...3.9.2)

blue-yonder/pyscaffold,blue-yonder/pyscaffold