NEW YORK — 30 Rock is getting a new look. The season finale of “Saturday Night Live” this week was more somber than expected as the late-night sketch show bid farewell to Kate McKinnon, Aidy Bryant, Pete Davidson and Kyle Mooney after all four announced that they will not be returning next season. McKinnon peaced out first in the cold open as her “Close Encounters” character, the foul-mouthed Ms. Rafferty, left Earth for good on an alien spaceship after her third abduction. “Well, Earth, I love you. Thanks for letting me stay awhile,” the teary actress said in character. Davidson and Bryant bo…
