Update requirements.txt

requirements.txt

@@ -1,14 +1,17 @@
 streamlit>=1.16.0
 requests>=2.25.0
-langchain>=0.0.148
-langgraph>=0.1.0
-typing_extensions>=4.0.0
-langchain-community>=0.0.148
 openai
 tiktoken
+pydantic-settings>=1.0.0
+pydantic<2.0
 chromadb==0.3.25
 langchain>=0.0.148
-pydantic-settings>=1.0.0
+langchain-community>=0.0.148
+streamlit>=1.16.0
+requests>=2.25.0
+typing_extensions>=4.0.0
+
+