Merge pull request #73 from Adyen/version-4.3.0

Update version to 4.3.0

Author: Colin Rood

lib/adyen/version.rb

@@ -1,4 +1,4 @@
 module Adyen
   NAME = "adyen-ruby-api-library"
-  VERSION = "4.2.0".freeze
+  VERSION = "4.3.0".freeze
 end