Thanks to “Grown Ups 2,” which is filming on the North Shore, big stars will attend the local premiere of the Adam Sandler -Andy Samberg comedy “That’s My Boy” at the Regal Fenway on Saturday night. Sandler, who appears in both films, will be on the red carpet, as will “Grown Ups” stars Salma Hayek and Maya Rudolph, David Spade’s “Rules of Engagement” costar Oliver Hudson, and Dan Patrick, who’ll also appear in the comedy sequel as a gym teacher, according to the sportscaster’s website. “That’s My Boy,” which was made in Mass., will be released on June 15.