Deprecated ‘org.jetbrains.kotlin.android’ plugin usage
The ‘org.jetbrains.kotlin.android’ plugin in project ‘:app’ is no longer required for Kotlin support since AGP 9.0.
Solution: Remove both android.builtInKotlin=true and android.newDsl=false from gradle.properties, then migrate to built-in Kotlin.
See https://kotl.in/gradle/agp-built-in-kotlin for more details.