build(deps): bump org.apache.activemq:activemq-client

Bumps [org.apache.activemq:activemq-client](https://github.com/apache/activemq) from 5.19.2 to 6.2.6.
- [Release notes](https://github.com/apache/activemq/releases)
- [Commits](apache/activemq@activemq-5.19.2...activemq-6.2.6)

---
updated-dependencies:
- dependency-name: org.apache.activemq:activemq-client
  dependency-version: 6.2.5
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

v2/pom.xml

@@ -47,7 +47,7 @@
         <dataplex.api.version>v1-rev20251113-2.0.0</dataplex.api.version>
         <!-- ActiveMQ version 5.19.2 uses JMS 2.0 but retains javax.jms compatibility. -->
         <!-- Upgrade to 6.x requires Beam/templates to transition to the Jakarta Messaging API (jakarta.jms). -->
-        <activemq.version>5.19.2</activemq.version>
+        <activemq.version>6.2.6</activemq.version>
         <licenseHeaderFile>../JAVA_LICENSE_HEADER</licenseHeaderFile>
     </properties>