dependency sync between k8shim and core

The dependency github.com/google/go-cmp in the k8shim has been updated to the latest version during the 1.4.0 release the core should move to the same version (0.6.0)
 
The dependency github.com/google/uuid in the k8shim has been updated during the 1.4.0 release the core should move to the same version (1.3.1). However there is a newer version 1.6.0 available probably better to move both to the latest release.