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:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements-tests.txt

@@ -1,6 +1,6 @@
 autoflake
 httpx >=0.22.0
-mypy == 1.8.0
+mypy == 1.9.0
 pytest >=7.1.3,<9.0.0
 pytest-asyncio==0.20.3
 pytest-cov >=2.12.0,<5.0.0