message: Fix build with new RAJA version
diff: @@ -147,9 +147,8 @@ public:
  // Step 2: exclusive scan for offsets in candidate array
  using exec_policy = typename axom::execution_space<ExecSpace>::loop_policy;
  - RAJA::exclusive_scan<exec_policy>(counts.data(),
  - counts.data() + npts,
  - offsets.data(),
  + RAJA::exclusive_scan<exec_policy>(RAJA::make_span(counts.data(), npts),
  + RAJA::make_span(offsets.data(), npts),
  RAJA::operators::plus<IndexType> {});
  IndexType totalCount = totalCountReduce.get();
  