Update requirements.txt

requirements.txt

@@ -1,5 +1,5 @@
-streamlit
-sqlite3
-google-generativeai
-huggingface_hub
-python-dotenv
+streamlit==1.20.0
+google-generativeai==0.2.0
+sqlite3==3.35.5  # This may not be necessary as it's included with Python by default
+python-dotenv==0.20.0
+huggingface_hub==0.14.0