Update requirements.txt

requirements.txt

@@ -1,14 +1,14 @@
 # local-rag-example
-python == ">=3.9,<3.9.7 || >3.9.7,<3.12"
-langchain >= "0.0.343"
+python         == 3.9              # ">=3.9,<3.9.7 || >3.9.7,<3.12"
+langchain      >= "0.0.343"
 streamlit-chat >= "0.1.1"
-pypdf >= "3.17.1"
-fastembed >= "0.1.1"
-openai >= "1.3.6"
-langchainhub >= "0.1.14"
-chromadb >= "0.4.18"
-streamlit >= "1.29.0"
-watchdog >= "3.0.0"
+pypdf          >= "3.17.1"
+fastembed      >= "0.1.1"
+openai         >= "1.3.6"
+langchainhub   >= "0.1.14"
+chromadb       >= "0.4.18"
+streamlit      >= "1.29.0"
+watchdog       >= "3.0.0"