build(deps-dev): bump activemq.version from 6.2.3 to 6.2.4

Bumps `activemq.version` from 6.2.3 to 6.2.4.

Updates `org.apache.activemq:activemq-broker` from 6.2.3 to 6.2.4
- [Release notes](https://github.com/apache/activemq/releases)
- [Commits](https://github.com/apache/activemq/compare/activemq-6.2.3...activemq-6.2.4)

Updates `org.apache.activemq.tooling:activemq-maven-plugin` from 6.2.3 to 6.2.4

---
updated-dependencies:
- dependency-name: org.apache.activemq:activemq-broker
  dependency-version: 6.2.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
- dependency-name: org.apache.activemq.tooling:activemq-maven-plugin
  dependency-version: 6.2.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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