First version bumps for Android 12
diff --git a/build.gradle b/build.gradle
index 3acb684..dce917c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,29 +1,31 @@
 buildscript {
     // 1.3.21 Android 10
     // 1.3.61 Android 11
+    // 1.4.30 Android 12
     // Check:
-    // https://android.googlesource.com/platform/external/kotlinc/+/refs/tags/android-11.0.0_r3/build.txt
-    ext.aosp_kotlin_version = '1.3.61'
+    // https://android.googlesource.com/platform/external/kotlinc/+/refs/tags/android-12.0.0_r2/build.txt
+    ext.aosp_kotlin_version = '1.4.31'  // 1.4.30 breaks Kotlin plugin in Android Studio
     ext.kotlin_version = '1.4.31'
 
     repositories {
         mavenCentral()
+        //noinspection JcenterRepositoryObsolete
         jcenter()
         google()
     }
     dependencies {
         //noinspection DifferentKotlinGradleVersion
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-        classpath "com.google.protobuf:protobuf-gradle-plugin:0.8.14"
-        classpath 'com.android.tools.build:gradle:4.2.1'
+        classpath "com.google.protobuf:protobuf-gradle-plugin:0.8.17"
+        classpath 'com.android.tools.build:gradle:7.0.2'
     }
 }
 
 ext {
-    buildToolsVersion = '30.0.2'
-    compileSdkVersion = 30
+    buildToolsVersion = '31.0.0'
+    compileSdkVersion = 31
     minSdkVersion = 29
-    targetSdkVersion = 30
+    targetSdkVersion = 31
 }
 
 apply from: 'gradle/dependencies.gradle'
@@ -31,6 +33,7 @@
 allprojects {
     repositories {
         mavenCentral()
+        //noinspection JcenterRepositoryObsolete
         jcenter()
         google()
         maven { url 'https://jitpack.io' }