Updates the requirements on [mypy](https://github.com/python/mypy) to permit the latest version.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](https://github.com/python/mypy/compare/v0.812...v0.901)
---
updated-dependencies:
- dependency-name: mypy
dependency-type: direct:development
...
Signed-off-by: dependabot[bot] <support@github.com>
sniffio = {version="^1.1", optional=true}
[tool.poetry.dev-dependencies]
-mypy = "^0.812"
+mypy = "^0.901"
pytest = ">=5.4.1,<7"
pytest-cov = "^2.10.0"
flake8 = "^3.7.9"