Support raft's logger targets (#557)

rapidsai/raft#2530 added new targets that we need to make global in cuvs's CMake as well.

Authors:
  - Vyas Ramasubramani (https://github.com/vyasr)

Approvers:
  - Bradley Dice (https://github.com/bdice)

URL: #557

cpp/cmake/thirdparty/get_raft.cmake

@@ -39,7 +39,7 @@ function(find_and_configure_raft)
     # Invoke CPM find_package()
     #-----------------------------------------------------
     rapids_cpm_find(raft ${PKG_VERSION}
-            GLOBAL_TARGETS      raft::raft
+            GLOBAL_TARGETS      raft::raft raft::raft_logger raft::raft_logger_impl
             BUILD_EXPORT_SET    cuvs-exports
             INSTALL_EXPORT_SET  cuvs-exports
             COMPONENTS          ${RAFT_COMPONENTS}