chore(deps): bump litellm from 1.81.0 to 1.83.0 (#19)

Bumps [litellm](https://github.com/BerriAI/litellm) from 1.81.0 to 1.83.0.
- [Release notes](https://github.com/BerriAI/litellm/releases)
- [Commits](https://github.com/BerriAI/litellm/commits)

---
updated-dependencies:
- dependency-name: litellm
  dependency-version: 1.83.0
  dependency-type: direct:production
...

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pyproject.toml

@@ -36,7 +36,7 @@ Repository = "https://github.com/openai/openai-agents-python"
 [project.optional-dependencies]
 voice = ["numpy>=2.2.0, <3; python_version>='3.10'", "websockets>=15.0, <16"]
 viz = ["graphviz>=0.17"]
-litellm = ["litellm>=1.81.0, <=1.82.6"]
+litellm = ["litellm>=1.81.0,<=1.83.0"]
 any-llm = ["any-llm-sdk>=1.11.0, <2; python_version >= '3.11'"]
 realtime = ["websockets>=15.0, <16"]
 sqlalchemy = ["SQLAlchemy>=2.0", "asyncpg>=0.29.0"]