build: Bump mypy from 1.3.0 to 1.4.0

Bumps [mypy](https://github.com/python/mypy) from 1.3.0 to 1.4.0.
- [Commits](python/mypy@v1.3.0...v1.4.0)

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

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

pyproject.toml

@@ -85,7 +85,7 @@ lint = [
   "flake8-pytest-style==1.7.2",
   "flake8-quotes==3.3.2",
   "flake8-use-fstring==1.4",
-  "mypy==1.3.0",
+  "mypy==1.4.0",
   "isort==5.12.0",
   "pytest==7.3.2",
 ]