fix: bump mypy from 0.971 to 1.6.1 (#72)

Bumps [mypy](https://github.com/python/mypy) from 0.971 to 1.6.1.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v0.971...v1.6.1)

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

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

requirements-dev.txt

@@ -3,7 +3,7 @@
 bandit==1.7.5
 black==23.7.0
 blacken-docs==1.15.0
-mypy==0.971
+mypy==1.6.1
 perflint==0.7.3
 pre-commit==3.3.3
 pyprojectsort==0.3.0