Republican gubernatorial nominee Lee Zeldin agreed Sunday to debate Democratic Gov. Kathy Hochul. The sole debate in the heated contest is scheduled for Tuesday at 7 p.m. Zeldin, who had clamored for months for a face-off against Hochul, had harsh words for the incumbent. “Kathy Hochul is a coward,” he said in a statement. “I have tirelessly called on Hochul to accept a series of debates on broadcast and across various media markets. “The first question should be why Kathy Hochul thinks that the bare minimum, rock-bottom standard of a single cable debate for one hour after so many New Yorkers …