Update Android Gradle and Kotlin versions for chapter4 projects#1

google-labs-jules[bot] wants to merge 2 commits intomasterrollcake86/new_do_it_flutter_makeApp:masterfrom

update-android-gradle-kotlin-chapter4-13477524550963015783rollcake86/new_do_it_flutter_makeApp:update-android-gradle-kotlin-chapter4-13477524550963015783Copy head branch name to clipboard