Upgrade maven-site-plugin to 3.8.2

Change-Id: I79a3032e2ff7af14a41e6eb2618d2b1e22d1fde2
Signed-off-by: Marco Miller <marco.miller@ericsson.com>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

pom.xml

@@ -371,7 +371,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-site-plugin</artifactId>
-          <version>3.7.1</version>
+          <version>3.8.2</version>
           <dependencies>
             <dependency><!-- add support for ssh/scp -->
               <groupId>org.apache.maven.wagon</groupId>