generally you have to put in an exception into the program flagging it (a pain, I know)
Just FYI the creator of Ren'Py is aware of the issue and will be working on a way to stop that from happening. https://lemmasoft.renai.us/forums/viewtopic.php?f=8&t=61205&p=538773&hilit=troja... (But again, there is no actual trojan in the package).