@ckeditor/ckeditor5-collaboration v12.0.0

CKEditor 5 collaboration -> CKEditor 5 real-time collaboration

Since the family of CKEditor 5 collaboration solutions was expanded, we have decided to rename this package to CKEditor 5 real-time collaboration and release it under the new name. The package with the old name thus becomes deprecated.

See the CKEditor 5 collaboration documentation to learn more.