Bump mypy from 0.961 to 0.971

Bumps [mypy](https://github.com/python/mypy) from 0.961 to 0.971.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.961...v0.971)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -17,7 +17,7 @@ flake8==3.9.2
 isort==5.10.1
 pytest==7.1.2
 pytest-mock==3.8.2
-mypy==0.961
+mypy==0.971
 types-click==7.1.8
 types-pyyaml==6.0.11
 trustme==0.9.0