Update dependency org.apache.maven.plugins:maven-jar-plugin to v3

Author: renovate[bot]

generator/pom.xml

@@ -49,7 +49,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>2.6</version>
+                <version>3.3.0</version>
                 <executions>
                     <execution>
                         <goals>