Bump mypy from 1.8.0 to 1.9.0 (#616)

Bumps [mypy](https://github.com/python/mypy) from 1.8.0 to 1.9.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.8.0...1.9.0)

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

@@ -4,7 +4,7 @@ bandit==1.7.8
 coverage==7.4.3
 docutils==0.20.1
 flake8==7.0.0
-mypy==1.8.0
+mypy==1.9.0
 pyroma==4.2
 pytest-cov==4.1.0
 pytest==8.1.0