Bump mypy from 1.15.0 to 1.16.1

Bumps [mypy](https://github.com/python/mypy) from 1.15.0 to 1.16.1.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.15.0...v1.16.1)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.16.1
  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 = "==2.11.7"
 black = "==25.1.0"
 pytest = "==8.3.5"
 pytest-mock = "==3.14.1"
-mypy = "==1.15.0"
+mypy = "==1.16.1"
 pytest-mypy-plugins = "==3.2.0"
 pytest-cov = "==6.1.1"