Update mypy requirement from <1.21.0,>=1.20.2 to >=2.1.0,<2.2.0

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@v1.20.2...v2.1.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -2,7 +2,7 @@ pytest>=9.0.3,<9.1.0
 autopep8>=2.3.2,<2.4.0
 flake8
 coverage
-mypy>=1.20.2,<1.21.0
+mypy>=2.1.0,<2.2.0
 build
 setuptools>=61.0
 types-setuptools