upgrade to Doxia 2: m-site-p and skin

Signed-off-by: Hervé Boutemy <[email protected]>

Author: hboutemy

pom.xml

@@ -350,7 +350,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-site-plugin</artifactId>
-                    <version>3.12.1</version>
+                    <version>3.21.0</version>
                 </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>

src/site/site.xml

@@ -3,7 +3,7 @@
     <skin>
         <groupId>org.apache.maven.skins</groupId>
         <artifactId>maven-fluido-skin</artifactId>
-        <version>1.12.0</version>
+        <version>2.0.1</version>
     </skin>
     <custom>
         <fluidoSkin>