test(server): expect schema five from current exports

crates/oa-server/tests/http.rs

@@ -2002,7 +2002,7 @@ async fn current_migration_reports_and_invalid_typed_transaction_preserve_http_s
         .text()
         .await
         .unwrap();
-    assert!(source.starts_with("arcadia 4;"));
+    assert!(source.starts_with("arcadia 5;"));
     assert_eq!(oa_core::language::parse(&source).unwrap(), stored.model);
     let no_op = server
         .client