Set Maven JAR plugin version for plugins.

src/core/de.evoal.core.plugin/pom.xml

@@ -199,6 +199,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-jar-plugin</artifactId>
+				<version>3.2.2</version>
 				<configuration>
 					<outputDirectory>${project.build.directory}/${project.artifactId}</outputDirectory>
 				</configuration>