PORT ST. JOHN, Fla. — A 12- and 13-year-old boy were charged with arson after telling sheriff's deputies in Brevard County, Fla., that they set a public library on fire because they were bored, according to Local 6 News partner Florida Today. Brevard County sheriff's deputies and Brevard County Fire-Rescue responded to a fire call Monday night at the St. John Public Library located at 6500 Carroll Ave. When firefighters arrived they found a fire had been set and heavy smoke was coming from the book despository at the entrance to the library, Florida Today reported. Sheriff's deputies said two…