chore(deps-dev): Update mypy requirement from ~=1.3.0 to ~=1.4.0 (#2135)

Updates the requirements on [mypy](https://github.com/python/mypy) to permit the latest version.
- [Commits](python/mypy@v1.3.0...v1.4.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:development
...

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

requirements/dev.txt

@@ -3,7 +3,7 @@ pylint~=2.17.4
 pytest~=7.4.0
 pytest-asyncio~=0.21.0
 # pytest-order~=1.0.1
-mypy~=1.3.0
+mypy~=1.4.0
 coverage~=7.2
 pre-commit==3.3.3
 codespell==2.2.5