Release Notes / Java 21 Support

Starting with CMCC v13.2512.0.0 the required JDK to build the workspace and run the applications is Java 21 LTS Release.

Upgrade Notes

Maven Plugins have been updated.
This includes especially a required update of the maven-dependency-plugin. It should be noted that the updated version provides stricter dependency checks, which may mean that you need to adapt your dependencies in Maven POMs to comply with the new requirements. The updated plugins ship with an update of com.coremedia:cms-blueprint-parent to version 3.0.0.
Java Application Base Image updated.
A new Java Application Base Image is used for the CMS applications: coremedia/java-application-base:3.1-cm-21.0-corretto-jre.
Removed Deprecated Java API Usages.
Deprecated API usages have been removed, which includes, but is not limited to:
- Locale constructor: Changed to using Locale.of().
- URL constructor: Replaced by alternatives like new URI(...).toURL().
Widened @cm.template.api annotations.
To address issues in the generated Javadoc for the template API, fixed missing @cm.template.api annotations.

(CMS-27319)

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