Update plugin versions to fix javadoc generation issues

pom.xml

@@ -26,7 +26,7 @@ under the License.
     <artifactId>maven-plugins</artifactId>
     <groupId>org.apache.maven.plugins</groupId>
     <version>34</version>
-    <relativePath>../../pom/maven/maven-plugins/pom.xml</relativePath>
+    <relativePath/>
   </parent>
 
   <artifactId>maven-dependency-plugin</artifactId>
@@ -95,6 +95,7 @@ under the License.
     <jettyVersion>9.4.41.v20210516</jettyVersion>
     <pluginTestingVersion>3.1.0</pluginTestingVersion>
     <javaVersion>8</javaVersion>
+    <mavenPluginToolsVersion>3.6.2</mavenPluginToolsVersion>
     <project.build.outputTimestamp>2021-06-07T12:17:08Z</project.build.outputTimestamp>
     <slf4j.version>1.7.32</slf4j.version>
   </properties>
@@ -400,6 +401,15 @@ under the License.
             </excludes>
           </configuration>
         </plugin>
+        <plugin>
+          <artifactId>maven-javadoc-plugin</artifactId>
+          <version>3.2.0</version>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-project-info-reports-plugin</artifactId>
+          <version>3.1.2</version>
+        </plugin>
       </plugins>
     </pluginManagement>
     <plugins>