gradle: bump to r30

build.gradle

@@ -77,11 +77,11 @@ amazon {
 }
 
 android {
-	compileSdkVersion 28
-	buildToolsVersion "28.0.3"
+	compileSdkVersion 30
+	buildToolsVersion "29.0.3"
 	defaultConfig {
 		minSdkVersion 14
-		targetSdkVersion 28
+		targetSdkVersion 30
 		versionName "$build_revision"
 		versionCode versionCodeDate()
 		resValue "string", "build_revision", "$build_revision"