module: update mypy to version 0.901

module: update mypy requirement from 0.812 to 0.901 (#39)

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>

pyproject.toml

@@ -16,9 +16,11 @@ pyyaml = "5.4.1"
 requests = "~2.25"
 
 [tool.poetry.dev-dependencies]
-mypy = "0.812"
+mypy = "0.901"
 pylint = "~2.8"
 rope = "~0.19"
+types-PyYAML = "~0.1"
+types-requests = "~0.1"
 yapf = "~0.31"
 
 [tool.yapf]