adding api key support in db.py

utils/db.py

@@ -21,7 +21,7 @@ class Database(object):
   db = None
   repo = None
   embedding_function = None
-  openai.api_key = os.environ["OPENAI_API_KEY"]
+  openai.api_key = st.secrets.get("OPENAI_API_KEY")
 
   @classmethod
   def __new__(cls, *args, **kwargs):