CKEditor 5 is a completely different animal. Upgrading to that would be a big pain and would be a completely different user experience.
DataBridge v2 has CKEditor 4.9.2 included. Using that would be the best way to upgrade.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.