chore(deps): bump mypy from 0.812 to 0.910

Bumps [mypy](https://github.com/python/mypy) from 0.812 to 0.910.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.812...v0.910)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements_test.txt

@@ -1,5 +1,5 @@
 pylint==2.7.2
 isort==5.8.0
 flake8==3.9.0
-mypy==0.812
+mypy==0.910
 black==21.7b0