Method rollback

crates/stdlib/src/_sqlite3.rs:1104–1111

(&self, vm: &VirtualMachine)

        #[pymethod]
        fn rollback(&self, vm: &VirtualMachine) -> PyResult<()> {
            let db = self.db_lock(vm)?;
            if !db.is_autocommit() {
                db._exec(b"ROLLBACK\0", vm)
            } else {
                Ok(())
            }
        }

        #[pymethod]
        fn execute(