Bump mypy from 1.14.1 to 1.15.0 (#338)

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-version: 1.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -31,7 +31,7 @@ dev = [
     "flake8==7.2.0",
     "flake8-bugbear==24.12.12",
     "flit==3.12.0",
-    "mypy==1.14.1",
+    "mypy==1.15.0",
     "ufmt==2.5.1",
     "usort==1.0.8.post1",
 ]