update axum to 7

src/main.rs

@@ -22,8 +22,10 @@ async fn main() {
     let app = app::create(feeds);
 
     tracing::debug!("Listening on {}", addr);
-    axum::Server::bind(&addr)
-        .serve(app.into_make_service())
+    let listener = tokio::net::TcpListener::bind(&addr)
+        .await
+        .expect("Faileds to listen on the specified address");
+    axum::serve(listener, app.into_make_service())
         .with_graceful_shutdown(signals::shutdown())
         .await
         .expect("Failed to start server");