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

updates:
- [github.com/PyCQA/isort: 5.9.1 → 5.9.2](https://github.com/PyCQA/isort/compare/5.9.1...5.9.2)
- [github.com/psf/black: 21.6b0 → 21.7b0](https://github.com/psf/black/compare/21.6b0...21.7b0)

scottclowe/python-ci,scottclowe/python-continuous-integration,scottclowe/python-ci,scottclowe/python-continuous-integration