Updating the image2 wysiwyg plugin.
Merge branch '4.3.x/standard' of github.com:NYPL/ckeditor-releases into 4.3.x/standard

* '4.3.x/standard' of github.com:NYPL/ckeditor-releases:
  Overwriting ckeditor's saved attribute reference so editing the catalog link can work
  Updating and changing references of uuid to url and adding data attribute in link and image for digital collections and catalog image so that it can save correctly. dumb ckeditor :rage: