Fix channel list response parsing

It seems that the API was changed out from under us. This actually
aligns with what's in their documentation and was likely fixed because
the extra nested array was unnecessary. However, it still breaks any
clients consuming this API.

custom_components/dae/client.py

@@ -109,7 +109,7 @@ class ListChannelsResponse(DaeResponse):
     @classmethod
     def from_response(cls, list_channels_resp: dict):
         channels = []
-        for channel in list_channels_resp.get('data')[0]:
+        for channel in list_channels_resp.get('data'):
             channels.append(Channel(channel['channel-id'],
                                     channel['channel-name'],
                                     channel['email'],