chore(deps-dev): Update mypy requirement from >=1.0 to >=1.20.0 (#6)

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@v1.0.0...v1.20.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.20.0
  dependency-type: direct:development
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -28,7 +28,7 @@ dependencies = ["httpx>=0.24.0"]
 langchain = ["langchain-core>=0.1.0"]
 crewai = ["crewai>=0.1.0"]
 autogen = ["pyautogen>=0.2.0"]
-dev = ["pytest>=7.0", "pytest-asyncio>=0.21", "pytest-cov>=4.0", "ruff>=0.1.0", "mypy>=1.0"]
+dev = ["pytest>=7.0", "pytest-asyncio>=0.21", "pytest-cov>=4.0", "ruff>=0.1.0", "mypy>=1.20.0"]
 
 [project.urls]
 Homepage = "https://trusera.dev"