ONSTAGE Becca Peyton, left, and Aster Smith portray Lily and Mary Lennox in Conejo Players’ production of “The Secret Garden.” Courtesy photo Conejo Players Theatre’s next show is no garden variety musical. The troupe is presenting “The Secret Garden,” based on Frances Hodgson Burnett’s beloved children’s novel. It tells the story of Mary Lennox, an 11-year-old