Add deprecatedSince to shape keys (#3245)

Author: jterapin

build_tools/aws-sdk-code-generator/lib/aws-sdk-code-generator/views/client_api_module.rb

@@ -49,6 +49,7 @@ class ClientApiModule < View
         'fault' => false,
         'deprecated' => false,
         'deprecatedMessage' => false,
+        'deprecatedSince' => false,
         'type' => false,
         'documentation' => false,
         'members' => false,