Fix ClassyTaxiAppKotlin's testDebug failing
Fix ClassyTaxiAppKotlin's testDebug failing

Details:
This is due Kapt not being compatible with JDK 16+ (https://youtrack.jetbrains.com/issue/KT-45545). The fix is in Kotlin 1.6.0+.

Bug: 211447895
Change-Id: I511a0ab41b7a7976732ca17e076ee43b8a56e282

android/play-billing-samples,android/play-billing-samples,android/play-billing-samples,android/play-billing-samples,android/play-billing-samples