Bump mypy from 1.8.0 to 1.9.0 in /requirements (#367)

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>

requirements/dev.txt

@@ -64,7 +64,7 @@ jmespath==1.0.1
     #   botocore
 markupsafe==2.1.5
     # via jinja2
-mypy==1.8.0
+mypy==1.9.0
     # via -r typing.in
 mypy-extensions==1.0.0
     # via mypy

requirements/typing.txt

@@ -10,7 +10,7 @@ cryptography==42.0.0
     # via
     #   types-pyopenssl
     #   types-redis
-mypy==1.8.0
+mypy==1.9.0
     # via -r typing.in
 mypy-extensions==1.0.0
     # via mypy