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] <support@github.com>

Author: dependabot[bot]

poetry.lock

@@ -70,7 +70,7 @@ pre-commit = "*"
 pytest = "^8"
 pytest-flake8 = "*"
 pytest-cov = "*"
-mypy = "^1.8"
+mypy = "^1.9"
 flynt = "^1.0"
 deptry = "^0.12.0"
 bump2version = "^1.0.1"