Update summarize_release.py

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Updated the AI model used for generating release summaries.

📊 Key Changes

• Changed the model parameter from OPENAI_MODEL to gpt-4o-2024-08-06 in the summarize_release.py script.

🎯 Purpose & Impact

• Enhanced Performance: By using a more advanced AI model, the quality and accuracy of the generated release summaries are expected to improve.
• Up-to-date Technology: Ensures the use of the latest AI capabilities provided by OpenAI, which could offer more sophisticated language understanding and generation.

🔔 Impact to Users: Users should experience more precise and insightful release summaries, making it easier to stay informed on changes.