add gjf conversion to CHANGES.md files

Author: simschla

CHANGES.md

@@ -10,6 +10,9 @@ This document is intended for Spotless developers.
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
 
 ## [Unreleased]
+### Changes
+* **POTENTIALLY BREAKING** Converted `googleJavaFormat` to a compile-only dependency and drop support for versions < `1.8`. ([#9999](https://github.com/diffplug/spotless/pull/9999))
+* Bump default `googleJavaFormat` version `1.15.0` -> `1.16.0`. ([#9999](https://github.com/diffplug/spotless/pull/9999))
 
 ## [2.37.0] - 2023-03-13
 ### Added

plugin-gradle/CHANGES.md

@@ -3,6 +3,9 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `3.27.0`).
 
 ## [Unreleased]
+### Changes
+* **POTENTIALLY BREAKING** Drop support for `googleJavaFormat` versions < `1.8`. ([#9999](https://github.com/diffplug/spotless/pull/9999))
+* Bump default `googleJavaFormat` version `1.15.0` -> `1.16.0`. ([#9999](https://github.com/diffplug/spotless/pull/9999))
 
 ## [6.17.0] - 2023-03-13
 ### Added

plugin-maven/CHANGES.md

@@ -3,6 +3,9 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
 
 ## [Unreleased]
+### Changes
+* **POTENTIALLY BREAKING** Drop support for `googleJavaFormat` versions < `1.8`. ([#9999](https://github.com/diffplug/spotless/pull/9999))
+* Bump default `googleJavaFormat` version `1.15.0` -> `1.16.0`. ([#9999](https://github.com/diffplug/spotless/pull/9999))
 
 ## [2.35.0] - 2023-03-13
 ### Added