Update requirements.txt

requirements.txt

@@ -1,7 +1,9 @@
 chainlit==0.7.700
-langchain==0.1.11
-langchain_openai==0.0.8
-langchain_community==0.0.28
-langchain_qdrant==0.1.4
-qdrant_client>=1.10.1,<2.0.0
-pymupdf==1.24.2
+langchain
+langchain_community
+langchain_openai
+langchain_core==0.2.40
+python-dotenv
+tiktoken
+pymupdf
+qdrant-client