Update mypy requirement from ~=0.961 to ~=0.971

Updates the requirements on [mypy](https://github.com/python/mypy) to permit the latest version.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.961...v0.971)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:development
...

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

requirements-dev.txt

@@ -3,5 +3,5 @@ pylint~=2.14.5
 pytest~=7.1.2
 pytest-asyncio~=0.18.3
 # pytest-order~=1.0.1
-mypy~=0.961
+mypy~=0.971
 coverage~=6.4