Update Eclipse Java compiler

Update
- orb.eclipse.jdt:ecj to 3.16.0
- plexus-compiler-eclipse to 2.8.5

Change-Id: I56d6d57c4c49646a9c98d2d1ca01b1b1d92280cf
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

pom.xml

@@ -875,12 +875,12 @@
               <dependency>
                 <groupId>org.codehaus.plexus</groupId>
                 <artifactId>plexus-compiler-eclipse</artifactId>
-                <version>2.8.4</version>
+                <version>2.8.5</version>
               </dependency>
               <dependency>
                 <groupId>org.eclipse.jdt</groupId>
                 <artifactId>ecj</artifactId>
-                <version>3.15.0</version>
+                <version>3.16.0</version>
               </dependency>
             </dependencies>
           </plugin>