Bump mypy from 0.991 to 1.9.0

Bumps [mypy](https://github.com/python/mypy) from 0.991 to 1.9.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v0.991...1.9.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements-test.txt

@@ -5,6 +5,6 @@ flake8==6.0.0
 pep257==0.7.0
 doc8==1.0.0
 Pygments==2.13.0
-mypy==0.991
+mypy==1.9.0
 pytest==7.2.0
 pytest-cov==4.0.0