build(deps): bump mypy in /.github/workflows/requirements/style

Bumps [mypy](https://github.com/python/mypy) from 1.8.0 to 1.12.1.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.8.0...v1.12.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/requirements/style/requirements.txt

@@ -2,6 +2,6 @@ black==24.8.0
 clingo==5.7.1
 flake8==7.1.1
 isort==5.13.2
-mypy==1.8.0
+mypy==1.12.1
 types-six==1.16.21.20240513
 vermin==1.6.0