Bump gemojione to 2.2.1
This version adds images_path directly to Gemojione::Index, so we no
longer have to provide that method nor the Emoji assets.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This version adds images_path directly to Gemojione::Index, so we no
longer have to provide that method nor the Emoji assets.