Update GAIA agent-gen ai in requirements

requirements.txt

@@ -13,6 +13,8 @@ llama-index-llms-groq            # Groq (fast, free tier)
 llama-index-llms-together        # Together AI
 llama-index-llms-huggingface-api # HuggingFace (free option)
 llama-index-llms-openai          # OpenAI GPT models
+llama-index-llms-google-genai    # Google Gemini (generous limits)
+
 
 # RAG components
 llama-index-embeddings-huggingface  # For persona embeddings