Update requirements.txt

requirements.txt

@@ -4,6 +4,7 @@ numpy>=1.24.0
 matplotlib>=3.7.0
 seaborn>=0.12.0
 langchain>=0.1.0
+langchain-community>=0.0.1  # Correct package name (hyphen, not underscore)
 openai>=1.0.0
 python-dotenv>=1.0.0
-'langchain_community
+groq>=0.5.0  # Add Groq SDK if needed