It’s time to say goodbye to Leo, J-Law, Ari, Timmy, Meryl, and the rest of the “Don’t Look Up” cast. The star-studded Netflix movie, which has been filming in Massachusetts since November, officially wraps principal photography this week, according to three sources familiar with the production. Thursday marked the final day of filming for the cast, which took place for the second straight day at Red Sky Studios in Allston. The end of principal photography means stars like Leonardo DiCaprio, Jennifer Lawrence, and the rest of the on-camera talent will officially be done Thursday, though there remains the possibility of film crews revisiting locations for pick-ups — short, minor footage sans cast filmed to augment what’s already been shot — before moving into post-production.