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>

Author: dependabot[bot]

local-requirements.txt

@@ -3,7 +3,7 @@ black==25.1.0
 build==1.2.2.post1
 flake8==7.1.1
 flaky==3.8.1
-mypy==1.14.1
+mypy==1.15.0
 objgraph==3.6.2
 Pillow==11.1.0
 pixelmatch==0.3.0