Bump mypy from 1.18.2 to 1.19.0

Bumps [mypy](https://github.com/python/mypy) from 1.18.2 to 1.19.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.18.2...v1.19.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.19.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Pipfile

@@ -12,7 +12,7 @@ pydantic = "==2.12.4"
 black = "==25.11.0"
 pytest = "==9.0.1"
 pytest-mock = "==3.15.1"
-mypy = "==1.18.2"
+mypy = "==1.19.0"
 pytest-mypy-plugins = "==3.2.0"
 pytest-cov = "==7.0.0"