Bump mypy from 0.910 to 0.920 (#274)

Bumps [mypy](https://github.com/python/mypy) from 0.910 to 0.920.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.910...v0.920)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pyproject.toml

@@ -28,7 +28,7 @@ pre-commit = "^2.16"
 black = {version = "^21.12b0", allow-prereleases = true}
 pylint = "^2.12.2"
 isort = "^5.10.1"
-mypy = "^0.910"
+mypy = "^0.920"
 flake8 = "^4.0.1"
 pyupgrade = "^2.29.1"
 pytest-asyncio = "^0.16.0"