Bump mypy from 1.2.0 to 1.4.1 (#368)

Bumps [mypy](https://github.com/python/mypy) from 1.2.0 to 1.4.1.
- [Commits](python/mypy@v1.2.0...v1.4.1)

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

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

requirements.txt

@@ -1,7 +1,7 @@
 -e .
 build==0.10.0
 docutils==0.19
-mypy==1.2.0; implementation_name=="cpython"
+mypy==1.4.1; implementation_name=="cpython"
 pre-commit==2.21.0
 pytest==7.4.0
 pytest-asyncio==0.21.1