Fix parsing attributes filter values in GraphQL API
Fix parsing attributes filter values in GraphQL API

KenMutemi/saleor,HyperManTT/ECommerceSaleor,jreigel/saleor,UITools/saleor,mociepka/saleor,car3oon/saleor,UITools/saleor,HyperManTT/ECommerceSaleor,mociepka/saleor,jreigel/saleor,maferelo/saleor,maferelo/saleor,tfroehlich82/saleor,mociepka/saleor,KenMutemi/saleor,maferelo/saleor,car3oon/saleor,jreigel/saleor,itbabu/saleor,UITools/saleor,itbabu/saleor,KenMutemi/saleor,UITools/saleor,tfroehlich82/saleor,car3oon/saleor,HyperManTT/ECommerceSaleor,itbabu/saleor,tfroehlich82/saleor,UITools/saleor