Bump org.apache.activemq:activemq-broker in /log4j-parent

Bumps [org.apache.activemq:activemq-broker](https://github.com/apache/activemq) from 6.1.4 to 6.1.5.
- [Commits](apache/activemq@activemq-6.1.4...activemq-6.1.5)

---
updated-dependencies:
- dependency-name: org.apache.activemq:activemq-broker
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

log4j-parent/pom.xml

@@ -60,7 +60,7 @@
     <!-- =====================================================
          Direct dependency version properties (in alphabetical order)
          ===================================================== -->
-    <activemq.version>6.1.4</activemq.version>
+    <activemq.version>6.1.5</activemq.version>
     <angus-activation.version>2.0.2</angus-activation.version>
     <angus-mail.version>2.0.3</angus-mail.version>
     <assertj.version>3.27.2</assertj.version>