Upgrade LLM model from GPT-5.2 to GPT-5.3#60

Topherhindman merged 1 commit intomainlivekit-examples/agent-starter-python:mainfrom

update-gpt-5.3-chat-latestlivekit-examples/agent-starter-python:update-gpt-5.3-chat-latestCopy head branch name to clipboard