build(deps): bump mypy from 1.14.1 to 1.15.0

Bumps [mypy](https://github.com/python/mypy) from 1.14.1 to 1.15.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.14.1...v1.15.0)

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

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

pyproject.toml

@@ -34,7 +34,7 @@ linting = ["pylint==3.3.4"]
 spellcheck = ["codespell==2.4.1"]
 test_packaging = ["build==1.2.2.post1", "twine==6.1.0"]
 tests = ["pytest==8.3.4"]
-type_check = ["mypy==1.14.1"]
+type_check = ["mypy==1.15.0"]
 
 [project.urls]
 Changelog = "https://github.com/Hochfrequenz/ebd_toolchain/releases"