bumping SdkVersions from 30 to 31 to check for Android 12

Author: emawby

Examples/OneSignalDemo/app/build.gradle

@@ -2,10 +2,10 @@ apply plugin: 'com.onesignal.androidsdk.onesignal-gradle-plugin'
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 30
+    compileSdkVersion 31
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 30
+        targetSdkVersion 31
         versionCode 1
         versionName "1.0"
         multiDexEnabled true

OneSignalSDK/build.gradle

@@ -4,8 +4,8 @@ buildscript {
 
     ext {
         buildVersions = [
-                compileSdkVersion: 30,
-                targetSdkVersion: 30
+                compileSdkVersion: 31,
+                targetSdkVersion: 31
         ]
         androidGradlePluginVersion = '3.6.2'
         googleServicesGradlePluginVersion = '4.3.2'