Added changelog entry for redacting improvements

What does this MR do?

This MR adds a changelog entry I forgot to add in !4828 (merged)

Are there points in the code the reviewer needs to double check?

No.

Why was this MR needed?

There was no changelog entry.

Does this MR meet the acceptance criteria?

• CHANGELOG entry added
• Conform by the style guides
• Branch has no merge conflicts with master (if you do - rebase it please)
• Squashed related commits together