updated requirements to try to solve HF issue

requirements.txt

@@ -1,9 +1,12 @@
 langchain>=0.3.0,<0.4.0
+langchain-core>=0.3.15
 langchain-openai>=0.2.0
 langchain-anthropic>=0.2.0,<0.3.0
-langchain-google-genai>=0.0.5
-langchain-community>=0.3.0,<0.4.0
-langgraph
+langchain-groq>=0.2.1
+langchain-mistralai>=0.0.5
+langchain-fireworks>=0.2.1
+langchain-community>=0.3.7,<0.4.0
+langgraph>=0.0.1
 pydantic>=2.0.0,<3.0.0
 python-dotenv>=1.0.0
 openai>=1.6.1