feat: upgrading targetSdkVersion

Author: tomivs

android/build.gradle

@@ -4,12 +4,12 @@ buildscript {
     ext {
         buildToolsVersion = "30.0.2"
         minSdkVersion = 21
-        compileSdkVersion = 30
-        targetSdkVersion = 30
+        compileSdkVersion = 31
+        targetSdkVersion = 31
         androidXCore = "1.0.2"
         multiDexEnabled = true
         googlePlayServicesVersion = "17.0.0"
-        kotlinVersion = '1.4.21'
+        kotlinVersion = '1.6.0'
     }
     repositories {
         google()