Update to latest sqlx in example (#2099)

examples/sqlx-postgres/Cargo.toml

@@ -10,4 +10,4 @@ tokio = { version = "1.0", features = ["full"] }
 tracing = "0.1"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 
-sqlx = { version = "0.6.3", features = ["runtime-tokio-rustls", "any", "postgres"] }
+sqlx = { version = "0.7", features = ["runtime-tokio-rustls", "any", "postgres"] }

examples/sqlx-postgres/src/main.rs

@@ -93,11 +93,10 @@ where
 }
 
 async fn using_connection_extractor(
-    DatabaseConnection(conn): DatabaseConnection,
+    DatabaseConnection(mut conn): DatabaseConnection,
 ) -> Result<String, (StatusCode, String)> {
-    let mut conn = conn;
     sqlx::query_scalar("select 'hello world from pg'")
-        .fetch_one(&mut conn)
+        .fetch_one(&mut *conn)
         .await
         .map_err(internal_error)
 }