Use the same Java/Kotlin versions as the flutter android template (#1708)

Author: brianquinlan

.github/workflows/okhttp.yaml

@@ -32,7 +32,7 @@ jobs:
       - uses: actions/setup-java@8df1039502a15bceb9433410b1a100fbe190c53b
         with:
           distribution: 'zulu'
-          java-version: '21'
+          java-version: '17'
       - uses: subosito/flutter-action@44ac965b96f18d999802d4b807e3256d5a3f9fa1
         with:
           channel: 'stable'

pkgs/ok_http/android/build.gradle

@@ -4,7 +4,7 @@ group = "com.example.ok_http"
 version = "1.0"
 
 buildscript {
-    ext.kotlin_version = '2.1.10'
+    ext.kotlin_version = '1.8.22'
     repositories {
         google()
         mavenCentral()
@@ -33,7 +33,7 @@ android {
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_21
+        jvmTarget = JavaVersion.VERSION_11
     }
 
     sourceSets {
@@ -42,7 +42,7 @@ android {
 
     // Bumping the plugin compileSdk version requires all clients of this plugin
     // to bump the version in their app.
-    compileSdk = 34
+    compileSdk = 35
 
     // Use the NDK version
     // declared in /android/app/build.gradle file of the Flutter project.
@@ -51,8 +51,8 @@ android {
     ndkVersion = android.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_21
-        targetCompatibility = JavaVersion.VERSION_21
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
     }
 
     defaultConfig {

pkgs/ok_http/example/android/app/build.gradle

@@ -29,8 +29,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_21
-        targetCompatibility = JavaVersion.VERSION_21
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_11
     }
 
     defaultConfig {