The cupbearer is referring to Pharaoh in third person. This is a common way for someone with less power to speak to someone with greater power. AT: "You, Pharaoh, were angry" (See: [[rc://en/ta/man/translate/figs-123person]])
Here "his" refers to Pharaoh. Here "servants" refers to the cupbearer and the chief baker. AT: "with us, your servants" (See: [[rc://en/ta/man/translate/figs-123person]])