Update requirements.txt

requirements.txt

@@ -1,6 +1,7 @@
-streamlit==1.30.0
-requests==2.31.0
-pymupdf==1.23.7
-sentence-transformers==2.2.2
-langchain==0.1.16
-langchain-groq==0.1.1
+streamlit
+requests
+pymupdf
+sentence-transformers
+langchain
+langchain-groq
+tiktoken