Bump mypy from 1.8.0 to 1.9.0 (#598)

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:production
  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>
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

pyproject.toml

@@ -40,7 +40,7 @@ version = "0.78.0"
 [project.optional-dependencies]
 test = [
     "codespell==2.2.6",
-    "mypy==1.8.0",
+    "mypy==1.9.0",
     "pre-commit==3.6.2",
     "pre-commit-hooks==4.5.0",
     "pylint==3.1.0",