Update app.py

app.py

@@ -1,7 +1,7 @@
 # Install necessary libraries
-!pip install -U langchain-community
-!pip install yt-dlp
-!pip install langchain sentence-transformers faiss-gpu pypdf transformers youtube-search-python arxiv requests scikit-learn
+pip install -U langchain-community
+pip install yt-dlp
+pip install langchain sentence-transformers faiss-gpu pypdf transformers youtube-search-python arxiv requests scikit-learn
 
 # Import libraries
 import os