Update requirements.txt

requirements.txt

@@ -1,12 +1,9 @@
-langchain-openai==0.1.0
-langchain-community==0.0.35
-langchain-core==0.1.47
-langgraph==0.0.31
-langchain-text-splitters==0.0.1
-pydantic==2.7.0
-chromadb==0.4.24
-streamlit==1.34.0
-requests==2.32.3
-typing-extensions==4.11.0
-tiktoken==0.5.2
-langchain
+# requirements.txt
+langgraph>=0.0.25
+langchain_openai>=0.0.4
+langchain_community>=0.0.11
+chromadb>=0.4.15
+openai>=1.9.0
+streamlit>=1.29.0
+requests>=2.31.0
+typing-extensions>=4.9.0