⬆️ Bump mypy from 0.990 to 0.991 (#242)

Bumps [mypy](https://github.com/python/mypy) from 0.990 to 0.991.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.990...v0.991)

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

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build-requirements.txt

@@ -1,6 +1,6 @@
 # in the meantime we migrate to pyproject.toml
 # this represent the minimum requirement to build (for the optional speedup)
-mypy==0.990; python_version >= "3.7"
+mypy==0.991; python_version >= "3.7"
 mypy==0.971; python_version < "3.7"
 build==0.9.0
 wheel==0.37.1

dev-requirements.txt

@@ -11,7 +11,7 @@ wheel==0.37.1
 black==22.8.0; python_version < "3.7"
 black==22.10.0; python_version >= "3.7"
 
-mypy==0.990; python_version >= "3.7"
+mypy==0.991; python_version >= "3.7"
 mypy==0.971; python_version < "3.7"
 
 Flask==2.2.2; python_version >= "3.7"