Update the plugin changelogs.

Author: nedtwigg

plugin-gradle/CHANGES.md

@@ -3,6 +3,10 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `3.27.0`).
 
 ## [Unreleased]
+### Changed
+* Bump default versions of formatters ([#1095](https://github.com/diffplug/spotless/pull/1095)).
+  * google-java-format `1.12.0` -> `1.13.0`
+  * ktfmt `0.29` -> `0.30`
 
 ## [6.2.0] - 2022-01-13
 ### 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]
+* Bump default versions of formatters ([#1095](https://github.com/diffplug/spotless/pull/1095)).
+  * google-java-format `1.12.0` -> `1.13.0`
+  * ktfmt `0.29` -> `0.30`
 
 ## [2.20.0] - 2022-01-13
 ### Added