Update requirements.txt

requirements.txt

@@ -1,10 +1,10 @@
-Flask==3.1.0
-Flask_Cors==5.0.0
-torch==2.0.1
-sentence-transformers==2.2.2
-InstructorEmbedding==1.0.0
+flask
+flask-cors
+torch
+transformers
+langchain
 langchain-community
-chromadb==0.4.24
-pypdf==5.2.0
-huggingface-hub==0.16.4
-tiktoken==0.8.0
+langchain-text-splitters
+sentence-transformers
+chromadb
+pypdf