Use flattenMode=defaults for 'asm-renamed'

On GitHub CI, there is a very strange error while downloading the POM,
which does not occur locally. Maybe this is due to the usage of
inline XML tags inside a CDATA section in the 'description' tag text.
The default mode removes the description.

Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>

asm-renamed/pom.xml

@@ -177,7 +177,7 @@
               <goal>flatten</goal>
             </goals>
             <configuration>
-              <flattenMode>oss</flattenMode>
+              <flattenMode>defaults</flattenMode>
               <pomElements>
                 <dependencies>remove</dependencies>
               </pomElements>