Update requirements.txt

requirements.txt

@@ -1,20 +1,22 @@
 streamlit
-langchain
-langchain-community
+langchain>=0.2.10,<0.3
+langchain-community>=0.2.10,<0.3
 langchainhub
-langchain-chroma
-chromadb==0.4.14
+langchain-chroma>=0.1.2
+chromadb>=0.4.22,<0.5 
 langchain-google-genai
 langchain-core
 beautifulsoup4
 sentence-transformers==2.2.2
 InstructorEmbedding
 faiss-cpu
-pypdf
+pypdf>=4.0.0
 langgraph
 typing-extensions
 google.generativeai
-langchain_openai
+langchain-openai>=0.1.7
+langchain-text-splitters>=0.2.2
 langchain_google_community
 langchain_google_community[gmail]
 python-dotenv
+langchain-text-splitters