This is a known false positive. Unfortunately every time I upload a new version most of the AV programs remove it from the whitelist and it has to be resent.
I'm not positive, but I think itch.io scans the uploads.
The zip file is uploaded by me personally, so I know the files haven't been tampered with. Obviously this requires one to have trust in me, but with a small but faithful group of supporters on Patreon, you can at least be assured that others can vouch for the safety of the game.