Consumers are likely to feel inflation bite when they go Christmas shopping this year, with a new forecast from Salesforce estimating retail prices will rise by as much as 20 percent this holiday season compared to last year. Salesforce expects a strong Christmas shopping season this year, estimating sales will top $1 trillion globally, the company said in the Sept. 29 forecast. But it warns of persistent supply-side pressures and expects everyone along the chain to feel the pinch of rising costs. “Increased costs appear to be front and center this year for retailers, suppliers, and consumers,” Salesforce said in the forecast, which estimates that the retail industry in the United States will face an extra $233 billion in the cost of goods sold around Christmas. Higher shipping costs, manufacturing capacity constraints, and a shortage of workers are chiefly to blame, the company says. While Salesforce’s retail inflation prediction of …