The Flutter SDK constraint in `pubspec.yaml` has been changed from `^3.27.0` to `>=3.27.0`.

Solving the issue:
* The Flutter constraint should not have an upper bound.
  In your pubspec.yaml the constraint is currently `^3.27.0`.

  You can replace that with just the lower bound: `>=3.27.0`.

  See https://dart.dev/go/flutter-upper-bound-deprecation