⬆️(backend) upgrade livekit-api to latest version

Update livekit-api dependency to most recent release, enabling custom session
configuration. New version allows disabling SSL verification in local
development environment through session parameter support.

src/backend/core/tests/services/test_lobby.py

@@ -863,7 +863,7 @@ def test_notify_participants_error(mock_livekit_api, lobby_service):
     mock_api_instance = mock.Mock()
     mock_api_instance.room = mock.Mock()
     mock_api_instance.room.send_data = mock.AsyncMock(
-        side_effect=TwirpError(msg="test error", code=123)
+        side_effect=TwirpError(msg="test error", code=123, status=123)
     )
 
     class MockResponse: