Bump org.apache.activemq:activemq-client from 5.19.0 to 5.19.3 (#6960)

Bumps [org.apache.activemq:activemq-client](https://github.com/apache/activemq) from 5.19.0 to 5.19.3.
- [Release notes](https://github.com/apache/activemq/releases)
- [Commits](apache/activemq@activemq-5.19.0...activemq-5.19.3)

---
updated-dependencies:
- dependency-name: org.apache.activemq:activemq-client
  dependency-version: 5.19.3
  dependency-type: direct:production
...

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pom.xml

@@ -289,7 +289,7 @@ from system library in Java 11+ -->
             <dependency>
                 <groupId>org.apache.activemq</groupId>
                 <artifactId>activemq-client</artifactId>
-                <version>5.19.0</version>
+                <version>5.19.3</version>
                 <exclusions>
                     <exclusion>
                         <groupId>org.slf4j</groupId>