Jem Aswad Senior Music EditorSinger-songwriter Sabrina Carpenter, newly signed to Island Records, is making a splash with her surprise first release on the label: a song that obviously addresses the drama surrounding her, “High School Musical: The Musical: The Series” stars Joshua Bassett and Olivia Rodrigo, and Rodrigo’s smash hit, “Drivers License.”Many fans have speculated that Rodrigo’s song is about the rumored relationship between Bassett and Carpenter.