chore(deps-dev): bump mypy from 1.14.1 to 1.15.0 in /it/python

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:development
  update-type: version-update:semver-minor
...

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

it/python/requirements-dev.txt

@@ -30,7 +30,7 @@ lazy-object-proxy==1.10.0 ; python_version >= '3.7'
 
 mccabe==0.7.0 ; python_version >= '3.6'
 
-mypy==1.14.1
+mypy==1.15.0
 
 mypy-extensions==1.0.0 ; python_version >= '3.5'