Update mypy requirement from ==1.0.* to ==1.9.*

Updates the requirements on [mypy](https://github.com/python/mypy) to permit the latest version.
- [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:production
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements-test.txt

@@ -1,4 +1,4 @@
 coverage == 7.2.*
-mypy == 1.0.*
+mypy == 1.9.*
 pre-commit == 3.1.*
 tox == 4.4.*