Upgrading flutter causes previously working build.gradle file to no longer build

URL: https://pub.dev/

I just updated to Flutter 3.10.2 and to build my app I needed to hack the build.gradle file on 3 packages due to some Kotlin version and Gradle plug-in compatibility issue.

pub.dev has tag for
- null safety
- dart 3 compatibility

Consider adding a tag for **Gradle 8**. I shouldn't have to hack a number of packages just to get my app to compile.

The 3 packages I needed to modify were these:
- flutter_contacts
- flutter_timezone-1.0.6
- mapbox_maps_flutter-0.4.3