updated shrinkwrap-resolver to 2.0.0

if we upgrade shrinkwrap-resolver to 2.0.0 then we get 
org.codehouse.plexus.classworlds:2.4,
thus we don't get anymore due to transitive dependencies  
org.codehouse.plexus.classworlds:1-2-alpha-10 and org.codehouse.plexus.classworlds:2.4