Update dependency mypy to v0.942

Author: renovate-bot

django-starter/Pipfile

@@ -6,7 +6,7 @@ verify_ssl = true
 [dev-packages]
 # Dev tools
 flake8 = "==3.9.2"
-mypy = "==0.910"
+mypy = "==0.942"
 pylint = "==2.11.1"
 autopep8 = "==1.5.7"
 black = "==21.6b0"