There's a bug filed about this now, so update comment. (#62892)

packages/flutter_tools/test/integration.shard/debugger_stepping_web_test.dart

@@ -47,7 +47,7 @@ void main() {
         reason: 'After $i steps, debugger should stop at $expectedLine but stopped at $actualLine'
       );
     }
-  }, skip: true); // This test is incredibly flaky on Cirrus
+  }, skip: true); // https://github.com/flutter/flutter/issues/62889
 
   tearDown(() async {
     await flutter.stop();