Update requirements.txt

requirements.txt

@@ -1,9 +1,7 @@
-streamlit>=1.28
-openai
-python-dotenv
-requests
-pillow
-pyyaml
-elevenlabs
-flask
-openai requests
+flask>=2.3
+python-dotenv>=1.0
+openai>=1.0
+requests>=2.31
+streamlit>=1.25
+# any other needed deps, e.g.:
+gunicorn>=20.1.0