Bump mypy from 0.982 to 0.991

Bumps [mypy](https://github.com/python/mypy) from 0.982 to 0.991.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.982...v0.991)

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

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

Author: dependabot[bot]

dev-requirements.txt

@@ -2,7 +2,7 @@ dask
 jsonschema
 pytest
 pytest-cov
-mypy==0.982
+mypy==0.991
 invoke==2.0.0
 types-jsonschema
 types-setuptools==65.7.0.3