Bump org.apache.activemq:activemq-client from 6.2.1 to 6.2.4 (#2607)

Bumps [org.apache.activemq:activemq-client](https://github.com/apache/activemq) from 6.2.1 to 6.2.4.
- [Release notes](https://github.com/apache/activemq/releases)
- [Commits](apache/activemq@activemq-6.2.1...activemq-6.2.4)

---
updated-dependencies:
- dependency-name: org.apache.activemq:activemq-client
  dependency-version: 6.2.4
  dependency-type: direct:production
...

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boms/tomee-plume/pom.xml

@@ -369,7 +369,7 @@
       <dependency>
         <groupId>org.apache.activemq</groupId>
         <artifactId>activemq-client</artifactId>
-        <version>6.2.1</version>
+        <version>6.2.4</version>
       </dependency>
       <dependency>
         <groupId>org.apache.activemq</groupId>

boms/tomee-plus/pom.xml

@@ -369,7 +369,7 @@
       <dependency>
         <groupId>org.apache.activemq</groupId>
         <artifactId>activemq-client</artifactId>
-        <version>6.2.1</version>
+        <version>6.2.4</version>
       </dependency>
       <dependency>
         <groupId>org.apache.activemq</groupId>

pom.xml

@@ -206,7 +206,7 @@
     <!-- com.sun -->
     <version.impl.saaj>3.0.4</version.impl.saaj>
     <!-- org.apache -->
-    <version.activemq>6.2.1</version.activemq>
+    <version.activemq>6.2.4</version.activemq>
     <version.batchee>2.0.0</version.batchee>
     <version.bval>3.0.1</version.bval>
     <version.cxf>4.2.1-SNAPSHOT</version.cxf>