SPRINGFIELD — Raising the minimum wage to $15 an hour is one step closer to Gov. J.B. Pritzker’s desk.On a party-line vote Thursday, the Senate approved raising the minimum wage to $15 per hour by 2025. Pritkzer campaigned on a promise to raise the minimum wage within his first six months in office.If the bill clears the House of Representatives next week, Pritzker could sign it into law before his budget address …