Bump mypy from 1.3.0 to 1.4.1

Bumps [mypy](https://github.com/python/mypy) from 1.3.0 to 1.4.1.
- [Commits](python/mypy@v1.3.0...v1.4.1)

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

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

Author: dependabot[bot]

poetry.lock

@@ -67,7 +67,7 @@ pytest = "^7.3.2"
 pytest-flake8 = "=1.1.1"
 pytest-cov = "^4.1.0"
 tox = "*"
-mypy = "^1.3"
+mypy = "^1.4"
 isort = "^5.11.5"
 black = "^23.3.0"
 flynt = "^0.78"