Update pom.xml

Author: telpirion

appengine-java21/appidentity/pom.xml

@@ -1,5 +1,5 @@
 <!--
- Copyright 2024 Google LLC
+ Copyright 2025 Google LLC
 
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.