Small update to the changelog.

Author: nedtwigg

CHANGES.md

@@ -14,6 +14,7 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 * `FileSignature.Promised` and `JarState.Promised` to facilitate round-trip serialization for the Gradle configuration cache. ([#1945](https://github.com/diffplug/spotless/pull/1945)) 
 ### Removed
 * **BREAKING** Remove `JarState.getMavenCoordinate(String prefix)`. ([#1945](https://github.com/diffplug/spotless/pull/1945))
+* **BREAKING** Replace `PipeStepPair` with `FenceStep`. ([#1954](https://github.com/diffplug/spotless/pull/1954))
 ### Fixed
 * Ignore system git config when running tests ([#1990](https://github.com/diffplug/spotless/issues/1990))