Update requirements.txt

requirements.txt

@@ -1,14 +1,14 @@
 # local-rag-example
 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"
+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