Android - target sdk version up

Author: wannabit-yongjoo

Cosmos-Android/app/build.gradle

@@ -3,11 +3,11 @@ apply plugin: 'kotlin-android'
 
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 29
     defaultConfig {
         applicationId "wannabit.io.cosmostaion"
         minSdkVersion 23
-        targetSdkVersion 28
+        targetSdkVersion 29
         versionCode 77
         versionName "1.4.4"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"