Merge pull request #826 from reflex-frp/so/bump-sdk-version

Update to target 31, Google Play store requires this is the target for apps after 2021

Author: ali-abrar

android/build.gradle.nix

@@ -44,7 +44,7 @@ allprojects {
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 30
+    compileSdkVersion 31
     buildToolsVersion '30.0.2'
 
     lintOptions {

android/impl.nix

@@ -36,7 +36,7 @@ in {
     keyStore = releaseKey.storeFile or null;
     keyStorePassword = releaseKey.storePassword or null;
     name = applicationId;
-    platformVersions = [ "30" ];
+    platformVersions = [ "31" ];
     release = false;
     src =
       let splitApplicationId = splitString "." applicationId;