feat(preview): Upgrade default version of box-content-preview to 2.16.0 (#1562)

Author: jstoffan

src/constants.js

@@ -151,7 +151,7 @@ export const DELIMITER_SLASH: 'slash' = 'slash';
 export const DELIMITER_CARET: 'caret' = 'caret';
 
 /* ---------------------- Defaults -------------------------- */
-export const DEFAULT_PREVIEW_VERSION = '2.5.1';
+export const DEFAULT_PREVIEW_VERSION = '2.16.0';
 export const DEFAULT_LOCALE = 'en-US';
 export const DEFAULT_PATH_STATIC = 'platform/elements';
 export const DEFAULT_PATH_STATIC_PREVIEW = 'platform/preview';