Bump mypy from 1.15.0 to 1.18.2

Bumps [mypy](https://github.com/python/mypy) from 1.15.0 to 1.18.2.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.15.0...v1.18.2)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.18.2
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -6,7 +6,7 @@ colorama==0.4.6
 flake8==7.3.0
 iniconfig==2.1.0
 mccabe==0.7.0
-mypy==1.15.0
+mypy==1.18.2
 mypy-extensions==1.0.0
 packaging==25.0
 pluggy==1.6.0