chore(deps): Bump org.apache.activemq:activemq-broker (#1761)

Bumps [org.apache.activemq:activemq-broker](https://github.com/apache/activemq) from 6.2.5 to 6.2.6.
- [Release notes](https://github.com/apache/activemq/releases)
- [Commits](apache/activemq@activemq-6.2.5...activemq-6.2.6)

---
updated-dependencies:
- dependency-name: org.apache.activemq:activemq-broker
  dependency-version: 6.2.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-activemq = "6.2.5"
+activemq = "6.2.6"
 cutterslade-analyze = "1.10.0"
 docker-spring-boot = "10.0.0"
 gradle-nexus-publish-plugin = "2.0.0"