update mypy to 1.2 (#351)

Summary:
To make it work with python  3.11
- [X] Ensured the test suite passes
- [X] Completed the Contributor License Agreement ("CLA")

Pull Request resolved: #351

Reviewed By: williamlw999-fb

Differential Revision: D44804660

Pulled By: deathowl

fbshipit-source-id: 59e2f908558e35f99db38b9b7b238970f3876699

requirements-dev.txt

@@ -3,7 +3,7 @@ coverage
 coveralls
 flake8
 isort~=5.1
-mypy==0.991
+mypy==1.2
 ipython
 sphinx
 sphinx-autobuild