adsb: use async delay

src/adsb.rs

@@ -198,7 +198,7 @@ pub fn run(url: &'static str, locations: Locations) -> Receiver<Event> {
                 tx.send(event).await.unwrap();
             }
 
-            std::thread::sleep(std::time::Duration::from_secs(1));
+            tokio::time::sleep(std::time::Duration::from_secs(1)).await;
         }
     });