An Upstate New York business owner admitted in federal court to defrauding a Canadian company out of $8.2 million in a scheme involving protective masks at the start of the Covid-19 pandemic.Julie Dotton, 53, of Orchard Park, pleaded guilty to wire fraud in federal court on Thursday in Central Islip before United States District Judge Gary R. Brown. Dotton faces a maximum sentence of 20 years’ imprisonment and must pay restitution of at least $8…