build(deps): bump org.apache.juneau:juneau-marshall from 8.1.3 to 9.2.0 (#1512)

* build(deps): bump org.apache.juneau:juneau-marshall from 8.1.3 to 9.2.0

Bumps org.apache.juneau:juneau-marshall from 8.1.3 to 9.2.0.

---
updated-dependencies:
- dependency-name: org.apache.juneau:juneau-marshall
  dependency-version: 9.2.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

* fix(rest): update JuneauXmlHandler for Juneau 9.x API compatibility

Replace deprecated builder() method with copy() to fix compilation
error after juneau-marshall upgrade from 8.1.3 to 9.2.0.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Lukasz Lenart <lukaszlenart@apache.org>
Co-authored-by: Claude <noreply@anthropic.com>

plugins/rest/pom.xml

@@ -58,7 +58,7 @@
         <dependency>
             <groupId>org.apache.juneau</groupId>
             <artifactId>juneau-marshall</artifactId>
-            <version>8.1.3</version>
+            <version>9.2.0</version>
             <optional>true</optional>
         </dependency>
 

plugins/rest/src/main/java/org/apache/struts2/rest/handler/JuneauXmlHandler.java

@@ -62,10 +62,10 @@ public class JuneauXmlHandler implements ContentTypeHandler {
         LOG.debug("Converting an object of {} into string", obj.getClass().getName());
         try {
             serializer
-                .builder()
-                .locale(invocation.getInvocationContext().getLocale())
-                .build()
-                .serialize(obj, stream);
+                    .copy()
+                    .locale(invocation.getInvocationContext().getLocale())
+                    .build()
+                    .serialize(obj, stream);
             return null;
         } catch (SerializeException e) {
             throw new IOException(e);