chore(release): Increment to version 2.19.0

Author: richardmcclellan

gradle.properties

@@ -25,8 +25,8 @@ android.useAndroidX=true
 android.enableJetifier=true
 
 GROUP=com.amazonaws
-VERSION_NAME=@SDK_VERSION@
-VERSION_CODE=1
+VERSION_NAME="2.19.0"
+VERSION_CODE=21900
 
 POM_URL=https://github.com/aws/aws-sdk-android
 POM_SCM_URL=https://github.com/aws/aws-sdk-android