Update requirements.txt

requirements.txt

@@ -1,7 +1,8 @@
-streamlit
- openai
- chromadb
- rank-bm25
- sentence-transformers
- numpy
- pandas
+streamlit>=1.28.0
+openai>=1.0.0
+chromadb>=0.4.0
+rank-bm25>=0.2.2
+sentence-transformers>=2.2.0
+pandas>=2.0.0
+numpy>=1.24.0
+tiktoken>=0.5.0