build(deps-dev): bump mypy from 1.0.0 to 1.9.0

Bumps [mypy](https://github.com/python/mypy) from 1.0.0 to 1.9.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.0.0...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

@@ -1,6 +1,6 @@
 darker[flynt,isort] == 2.0.0
 freezegun == 1.1.0
-mypy == 1.0.0
+mypy == 1.9.0
 pre-commit == 3.3.3
 pylint == 3.1.0
 pytest == 6.2.5