build(deps-dev): update mypy requirement from <2,>=1.19.1 to >=2.1.0,<3

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@v1.19.1...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]

requirements/dev-tools.txt

@@ -1,3 +1,3 @@
 black
 flake8>=7.3.0, <8;
-mypy>=1.19.1, <2
+mypy>=2.1.0, <3