Sorry to hear that. It's 100% false positive. Try to temporarily disable the windows defender real time protection just to download the zip, unpack the zip and scan the executable manually with an antivirus of your choice to make sure it's safe.
Looks like this is quite common with Godot 4 executables. I'll try this workaround asap: https://itch.io/t/3990804/tips-avoid-false-positives-with-anti-viruses-and-godot...
Unfortunately, as much as I'd like, I cannot make a web version easily. Game's visuals as well as the core light/shadow mechanic depend on advanced rendering features available only with Vulkan renderer while browser export can only use OpenGL.