fix: add core library desugaring and update ci workflow to run instrumentation test on more devices (#789)

Fixes  ooni/probe#2750

## Proposed Changes

  - Enable core library desugaring
  - Update ci workflow to test on more devices

Author: aanorbel

.github/workflows/validate.yml

@@ -71,8 +71,8 @@ jobs:
 
     strategy:
       matrix:
-        api-level: [ 29 ]
-        target: [ google_apis ]
+        api-level: [25, 29] # Bug in API 21-24
+        target: [default, google_apis]
 
     steps:
       - name: Set up JDK 17

app/build.gradle

@@ -111,6 +111,7 @@ android {
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_17
         targetCompatibility JavaVersion.VERSION_17
+        coreLibraryDesugaringEnabled = true
     }
     kotlinOptions {
         jvmTarget = JavaVersion.VERSION_17
@@ -125,6 +126,9 @@ android {
 dependencies {
     implementation project(path: ':engine')
 
+    // Desugaring
+    coreLibraryDesugaring(libs.desugar.jdk.libs.nio)
+
 // AndroidX
     implementation libs.androidx.appcompat
     implementation libs.androidx.constraintlayout

gradle/libs.versions.toml

@@ -2,6 +2,7 @@
 androidGradlePlugin = "8.5.1"
 barista = "3.9.0"
 countlySdk = "24.7.0"
+desugar_jdk_libs_nio = "2.0.4"
 faker = "2.0.4"
 mockito = "5.12.0"
 robolectric = "4.13"
@@ -55,6 +56,7 @@ gms-googleServices = "4.4.1"
 android-gradlePlugin = { group = "com.android.tools.build", name = "gradle", version.ref = "androidGradlePlugin" }
 barista = { module = "com.schibsted.spain:barista", version.ref = "barista" }
 countly-sdk = { module = "ly.count.android:sdk", version.ref = "countlySdk" }
+desugar_jdk_libs_nio = { module = "com.android.tools:desugar_jdk_libs_nio", version.ref = "desugar_jdk_libs_nio" }
 faker = { module = "com.github.blocoio:faker", version.ref = "faker" }
 robolectric = { module = "org.robolectric:robolectric", version.ref = "robolectric" }
 fastlane-screengrab = { module = "tools.fastlane:screengrab", version.ref = "fastlaneScreengrab" }