clippy is incompatible with the latest stable Flutter/Dart

[isaaclyman]

Dart 3.0.0 has implemented null safety as a requirement. Flutter 3.10.0, the new stable release, uses Dart 3. Pub.dev shows that this package is incompatible with Dart 3, meaning that it cannot be used in new Flutter projects, and Flutter projects that use this package cannot update to v3.10.