Groq: Groq changelog deprecation announced

Updated chat completion model parameter to remove deprecated models and add newer production models. Removed: gemma-7b-it and mixtral-8x7b-32768 . Added: gemma2-9b-it , llama-3.3-70b-versatile , llama-3.1-8b-instant , and llama-guard-3-8b . For the most up-to-date information on Groq's models, see the models page , or learn more about our deprecati