chore(deps-dev): update mypy requirement

Updates the requirements on [mypy](https://github.com/python/mypy) to permit the latest version.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.11.2...v2.1.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 2.1.0
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

packages/authentication/azure/requirements-dev.txt

@@ -3,7 +3,7 @@
 yapf>=0.43.0,<0.44.0
 isort>=5.13.2,<9.0.0
 pylint>=3.2.7,<5.0.0
-mypy>=1.11.2,<3.0.0
+mypy>=2.1.0,<3.0.0
 pytest>=8.3.2,<10.0.0
 pytest-asyncio>=0.24,<1.5
 pytest-mock>=3.14.0,<4.0.0