Update requirements.txt

requirements.txt

@@ -1,6 +1,7 @@
-openai==1.12.0
-streamlit==1.31.0
-python-dotenv==1.0.0
-pydub==0.25.1
-watchdog==3.0.0
-numpy==1.24.3
+streamlit>=1.27.0
+openai>=1.0.0
+python-dotenv>=1.0.0
+pydub>=0.25.1
+ffmpeg-python>=0.2.0
+numpy>=1.21.0
+pathlib>=1.0.1