Update mypy version in pre-commit and add pytest for pytest types

Author: philpep

.pre-commit-config.yaml

@@ -50,7 +50,7 @@ repos:
           - flake8-pep3101
           - flake8-print
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.991
+    rev: v1.4.1
     hooks:
       - id: mypy
         # empty args needed in order to match mypy cli behavior
@@ -59,3 +59,4 @@ repos:
           - types-setuptools
           - setuptools-scm
           - alabaster
+          - pytest