[BUG] icon resolution decreased

### :information_source: Info

Version: `0.13.1`

### :speech_balloon: Description

After using the dependency to change my app icon, I noticed a blur in the compiled app icon, as if the icon resolution had decreased on the phone. Could this be due to my selected image or something similar? Perhaps related to the image quality?

### :scroll: Pubspec.yaml

```yaml
name: dev_bank
description: "Mobile Flutter app for a development bank."
publish_to: 'none'

version: 0.0.1

environment:
sdk: '>=3.2.3 <4.0.0'

dependencies:
flutter:
sdk: flutter
cupertino_icons: ^1.0.2
firebase_core: ^2.27.0
flutter_launcher_icons: ^0.13.1

flutter_icons:
android: "launcher_icon"
ios: true
remove_alpha_ios: true
image_path: "assets/images/logo-icon.png"
adaptive_icon_background: "#ffffff"
adaptive_icon_foreground: "assets/images/foreground-logo-icon.png"

dev_dependencies:
flutter_test:
sdk: flutter
flutter_lints: ^2.0.0

flutter:
uses-material-design: true
assets:
- assets/images/
```

Also the images used:

logo-icon


foreground-logo-icon


Start by reproducing the report with Flutter Launcher Icons 0.13.1, the supplied pubspec.yaml configuration, and the linked logo-icon and foreground-logo-icon images. Compare the generated compiled app icon with the source images to determine whether the blur is caused by the dependency or the selected assets; done means the cause is reproducible and clearly identified.

Written by the indexing model from the issue text.