Being new, Flutter changes a lot. It's nice to see these messages that help developers upgrade. To often old projects get left behind
━━━━━━━━━━━━━━━━━━━━━━━━━ Warning ─────────────────────── Your Flutter application is created using an older version of the Android embedding. It's being deprecated in favor of Android embedding v2. Follow the steps at https://flutter.dev/go/android-project-migration to migrate your project. ━━━━━━━━━━━━━━━━━━━━━━━━━━
The instructions are clear and not urgent. They can be done at a later time and are well explained.