Bump mypy from 1.8.0 to 1.9.0

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] <[email protected]>

Author: dependabot[bot]

requirements-dev.txt

@@ -2,7 +2,7 @@ black==24.3.0
 coverage==7.4.3
 flake8==7.0.0
 isort==5.13.2
-mypy==1.8.0
+mypy==1.9.0
 pre-commit==3.3
 pygments==2.17.2
 sphinx==7.0.1