Update requirements.txt

requirements.txt

@@ -1,14 +1,12 @@
-langchain==0.2.16
+langchain
 langchain-cli
-langchain-community==0.2.16
-langchain-core==0.2.38
-langchain-experimental==0.0.65
-langchain-fireworks==0.1.7
-openai==1.43.0
+langchain-community
+langchain-core
+langchain-experimental
+langchain-fireworks
+openai
 gradio
 gradio-client
 chromadb
-langsmith==0.1.108
-tiktoken==0.7.0
-langchain-openai==0.1.23
-langchain-chroma
+langsmith
+tiktoken