Bump mypy from 0.902 to 0.910

Bumps [mypy](https://github.com/python/mypy) from 0.902 to 0.910.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.902...v0.910)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

requirements.txt

@@ -4,6 +4,6 @@ pytest==6.2.4
 pytest-asyncio==0.15.1
 pytest-cov==2.12.1
 docutils==0.17.1
-mypy==0.902; implementation_name=="cpython"
+mypy==0.910; implementation_name=="cpython"
 flake8==3.9.2
 -e .