chore(deps)(deps-dev): update mypy requirement

Updates the requirements on [mypy](https://github.com/python/mypy) to permit the latest version.

Updates `mypy` to 2.0.0
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.0.0...v2.0.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 2.0.0
  dependency-type: direct:development
  dependency-group: all-dependencies
...

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

Author: dependabot[bot]

pyproject.toml

@@ -68,7 +68,7 @@ optional-dependencies.dev = [
   "lxml>=5.0,<7.0",
   "mistune>=3.0,<4.0",
   "mutmut>=3.5,<4.0",
-  "mypy>=1.0,<2.0",
+  "mypy>=1.0,<3.0",
   "pebble>=5.0,<6.0",
   "pre-commit>=3.0,<5.0",
   "pygit2>=1.12,<2.0",