Add missing lints (#24381)
* update lint list
* enable sort_pub_dependencies
* enable avoid_returning_null_for_void
* enable flutter_style_todos
diff --git a/packages/flutter_tools/lib/src/run_cold.dart b/packages/flutter_tools/lib/src/run_cold.dart
index 9d301de..12e3478 100644
--- a/packages/flutter_tools/lib/src/run_cold.dart
+++ b/packages/flutter_tools/lib/src/run_cold.dart
@@ -12,7 +12,7 @@
import 'resident_runner.dart';
import 'tracing.dart';
-// TODO(flutter/flutter#23031): Test this.
+// TODO(mklim): Test this, flutter/flutter#23031.
class ColdRunner extends ResidentRunner {
ColdRunner(
List<FlutterDevice> devices, {