Add version of maven-jar-plugin

h2/pom.xml

@@ -220,6 +220,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>
+        <version>3.1.0</version>
         <configuration>
           <archive>
             <manifest>