Testament’s Alex Skolnick is among the artists set to take part in the “Headbangers For Harris” virtual fundraiser. The event, which was organized by New York City councilman Justin Brannan (Most Precious Blood, ex-Indecision), Albuquerque’s “metal” mayor Tim Keller, and Virginia state senator Danica Roem (ex-Cab Ride Home), will help raise money for the Kamala…