Update changelog with description of the deal with the new signing key.

Author: ntwigg

CHANGES.md

@@ -12,6 +12,7 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 ## [Unreleased]
 ### Fixed
 * Fix `UnsupportedOperationException` in the Gradle plugin when using `targetExcludeContent[Pattern]` ([#2487](https://github.com/diffplug/spotless/pull/2487))
+* gpg key had expired, this and future releases will be signed by new key ([details](https://github.com/diffplug/spotless/discussions/2464))
 ### Changed
 * Bump default `eclipse` version to latest `4.34` -> `4.35`. ([#2458](https://github.com/diffplug/spotless/pull/2458))
 * Bump default `greclipse` version to latest `4.32` -> `4.35`. ([#2458](https://github.com/diffplug/spotless/pull/2458))

plugin-gradle/CHANGES.md

@@ -8,6 +8,7 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 ### Changed
 * Bump default `eclipse` version to latest `4.34` -> `4.35`. ([#2458](https://github.com/diffplug/spotless/pull/2458))
 * Bump default `greclipse` version to latest `4.32` -> `4.35`. ([#2458](https://github.com/diffplug/spotless/pull/2458))
+* gpg key had expired, this and future releases will be signed by new key ([details](https://github.com/diffplug/spotless/discussions/2464))
 
 ## [7.0.3] - 2025-04-07
 ### Changed

plugin-maven/CHANGES.md

@@ -6,6 +6,7 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 ### Changed
 * Bump default `eclipse` version to latest `4.34` -> `4.35`. ([#2458](https://github.com/diffplug/spotless/pull/2458))
 * Bump default `greclipse` version to latest `4.32` -> `4.35`. ([#2458](https://github.com/diffplug/spotless/pull/2458))
+* gpg key had expired, this and future releases will be signed by new key ([details](https://github.com/diffplug/spotless/discussions/2464))
 
 ## [2.44.4] - 2025-04-07
 ### Changed