[pigeon]: Bump org.jetbrains.kotlin:kotlin-gradle-plugin from 1.8.20 to 1.8.21 in /packages/pigeon/platform_tests/test_plugin/android#3824

auto-submit[bot] merged 1 commit intomainflutter/packages:mainfrom

dependabot/gradle/packages/pigeon/platform_tests/test_plugin/android/org.jetbrains.kotlin-kotlin-gradle-plugin-1.8.21flutter/packages:dependabot/gradle/packages/pigeon/platform_tests/test_plugin/android/org.jetbrains.kotlin-kotlin-gradle-plugin-1.8.21Copy head branch name to clipboard