Merge pull request #300 from Kotlin-Android-Open-Source/hoc081098-patch-1

Update minSdkVersion from 21 to 23

Author: hoc081098

buildSrc/src/main/kotlin/appConfig.kt

@@ -4,7 +4,7 @@ object appConfig {
 
   const val compileSdkVersion = 36
   const val buildToolsVersion = "36.0.0"
-  const val minSdkVersion = 21
+  const val minSdkVersion = 23
   const val targetSdkVersion = 36
 
   private const val MAJOR = 2