Workaround missing Android image in CI and upgrade dependencies (#234)

* Workaround missing default system image for Android API level 36

Google hasn't published an AOSP version of the Android system image
for API level 36 yet:
https://issuetracker.google.com/issues/432143095

Temporarily switch to the Google APIs variant to workaround this
issue.

* example: revert Android targetSdkVersion to Flutter default

Version 31 no longer meets Google Play requirements.

* Bump Kotlin version to 2.2.21

* example: upgrade AGP to version 8.13.0

Author: emersion

.github/workflows/test.yml

@@ -192,12 +192,16 @@ jobs:
           echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
           sudo udevadm control --reload-rules
           sudo udevadm trigger --name-match=kvm
-      - name: Run flutter test integration_test/webcrypto_test.dart -d android
+      - name: Run flutter test integration_test/webcrypto_test.dart -d emulator
         uses: reactivecircus/android-emulator-runner@v2
         with:
           api-level: 36
+          # TODO: switch back to default once this is issue resolved:
+          # https://issuetracker.google.com/issues/432143095
+          target: google_apis
+          arch: x86_64
           working-directory: ./example
-          script: flutter test integration_test/webcrypto_test.dart -d android
+          script: flutter test integration_test/webcrypto_test.dart -d emulator
   linux-coverage:
     name: Linux desktop / Chrome / Firefox (coverage)
     runs-on: ubuntu-latest

android/build.gradle

@@ -2,7 +2,7 @@ group 'com.example.webcrypto'
 version '1.0-SNAPSHOT'
 
 buildscript {
-    ext.kotlin_version = '1.6.10'
+    ext.kotlin_version = '2.2.21'
     repositories {
         google()
         mavenCentral()

example/android/app/build.gradle

@@ -43,7 +43,7 @@ android {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "com.example.webcrypto_example"
         minSdkVersion flutter.minSdkVersion
-        targetSdkVersion 31
+        targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
     }

example/android/gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-all.zip

example/android/settings.gradle

@@ -18,8 +18,8 @@ pluginManagement {
 
 plugins {
     id "dev.flutter.flutter-plugin-loader" version "1.0.0"
-    id "com.android.application" version "8.4.1" apply false
-    id "org.jetbrains.kotlin.android" version "1.7.10" apply false
+    id "com.android.application" version '8.13.0' apply false
+    id "org.jetbrains.kotlin.android" version "2.2.21" apply false
 }
 
 include ":app"