Bump mypy from 1.11.2 to 1.12.1

Bumps [mypy](https://github.com/python/mypy) from 1.11.2 to 1.12.1.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.11.2...v1.12.1)

---
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]

poetry.lock

@@ -51,7 +51,7 @@ sphinx-copybutton = "^0.5.0"
 retry = "^0.9.2"
 Flask = "^2.0.3"
 pytest-xdist = "^3.5.0"
-mypy = "1.11.2"
+mypy = "1.12.1"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]