Bump mypy from 0.991 to 1.0.0

Bumps [mypy](https://github.com/python/mypy) from 0.991 to 1.0.0.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.991...v1.0.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

setup.py

@@ -96,7 +96,7 @@
             'pep8-naming==0.13.3',
         ],
         'type': [
-            'mypy==0.991',
+            'mypy==1.0.0',
             'boto3-stubs[s3]==1.26.50',
             'django-stubs==1.14.0',
             'djangorestframework-stubs==1.8.0',