Bump mypy from 0.910 to 0.930 (#52)

Bumps [mypy](https://github.com/python/mypy) from 0.910 to 0.930.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.910...v0.930)

---
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

@@ -17,7 +17,7 @@ deprecation = "^2.1.0"
 pytest = "^6.2.5"
 pytest-asyncio = "^0.16.0"
 pytest-cov = "^3.0.0"
-mypy = "^0.910"
+mypy = "^0.930"
 black = { version = "^21.11b1", allow-prereleases = true }
 pre-commit = "^2.16.0"
 unasync-cli = "^0.0.9"