(doc) Upgrade parent pom and plugins
diff --git a/pom.xml b/pom.xml
index 3806b90..d553a6f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven-parent</artifactId>
-    <version>34</version>
+    <version>36</version>
     <relativePath/>
   </parent>
 
@@ -101,7 +101,7 @@
     <dependency>
       <groupId>org.apache.maven.reporting</groupId>
       <artifactId>maven-reporting-impl</artifactId>
-      <version>3.0.0</version>
+      <version>3.1.0</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.aether</groupId>
@@ -144,7 +144,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-project-info-reports-plugin</artifactId>
-          <version>3.1.1</version>
+          <version>3.4.0</version>
         </plugin>
       </plugins>
     </pluginManagement>
@@ -157,7 +157,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-plugin-plugin</artifactId>
-        <version>3.6.2</version>
+        <version>3.6.4</version>
         <executions>
           <execution>
             <id>default-descriptor</id>
@@ -187,7 +187,7 @@
                 <artifactItem>
                   <groupId>org.apache.maven.skins</groupId>
                   <artifactId>maven-fluido-skin</artifactId>
-                  <version>1.7</version>
+                  <version>1.10.0</version>
                   <outputDirectory>${project.build.directory}/site</outputDirectory>
                   <includes>**\/*.css, **\/*.png, **\/*.gif</includes>
                 </artifactItem>
@@ -199,6 +199,7 @@
       <plugin>
         <groupId>org.apache.rat</groupId>
         <artifactId>apache-rat-plugin</artifactId>
+        <version>0.14</version>
         <configuration>
           <excludes combine.children="append">
             <exclude>.repository/**</exclude> <!-- jenkins with local maven repository -->