Bump org.apache.maven.plugins:maven-jar-plugin from 2.3 to 3.4.2

Bumps [org.apache.maven.plugins:maven-jar-plugin](https://github.com/apache/maven-jar-plugin) from 2.3 to 3.4.2.
- [Release notes](https://github.com/apache/maven-jar-plugin/releases)
- [Commits](apache/maven-jar-plugin@maven-jar-plugin-2.3...maven-jar-plugin-3.4.2)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-jar-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

subsystem/subsystem-itests/pom.xml

@@ -43,7 +43,7 @@
         <easymock.version>3.0</easymock.version>
         <exam.version>3.4.0</exam.version>
         <logback.version>1.5.16</logback.version>
-        <maven-jar-plugin.version>2.3</maven-jar-plugin.version>
+        <maven-jar-plugin.version>3.4.2</maven-jar-plugin.version>
         <org.apache.aries.application.api.version>1.0.0</org.apache.aries.application.api.version>
         <org.apache.aries.application.modeller.version>1.0.0</org.apache.aries.application.modeller.version>
         <org.apache.aries.application.utils.version>1.0.0</org.apache.aries.application.utils.version>