Bump mypy from 1.14.1 to 1.15.0 in the pip group

Bumps the pip group with 1 update: [mypy](https://github.com/python/mypy).


Updates `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:development
  update-type: version-update:semver-minor
  dependency-group: pip
...

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