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_test.txt

@@ -4,7 +4,7 @@ flake8==4.0.1
 flake8-comprehensions==3.10.0
 flake8-docstrings==1.6.0
 flake8-noqa==1.2.7
-mypy==0.961
+mypy==0.971
 pre-commit==2.20.0
 pylint==2.14.5
 pylint_strict_informational==0.1