Update mypy due to python/mypy#13627

Author: whitphx

packages/kernel/py/e2etests/pyproject.toml

@@ -15,7 +15,7 @@ streamlit = "1.10.0"
 black = "^22.6.0"
 flake8 = "^5.0.4"
 isort = "^5.10.1"
-mypy = "^0.971"
+mypy = "^0.981"
 types-requests = "^2.28.8"
 
 [build-system]