Update requirements.txt

requirements.txt

@@ -1,7 +1,15 @@
-flask==2.0.3
-werkzeug==2.0.3
-requests==2.27.1
+# Core dependencies for Flask application
+flask==2.3.3
+werkzeug==2.3.8
+requests==2.31.0
 python-dotenv==0.19.2
-gunicorn==20.1.0
+gunicorn==21.2.0
 backoff==2.2.1
-firebase-admin==5.2.0  # Optional, include if Firebase is enabled
+
+# Dependencies for semantic similarity (chatbot.py)
+sentence-transformers==2.2.2
+torch==2.0.1
+transformers==4.35.2
+
+# Optional: Firebase integration (enable if firebase_config.py is present)
+# firebase-admin==5.2.0