message: Update min cmake version.
diff: # SPDX-License-Identifier: (BSD-3-Clause)
  ###############################################################################
  -if (ENABLE_CUDA)
  - cmake_minimum_required(VERSION 3.9)
  -else ()
  - cmake_minimum_required(VERSION 3.8.2)
  -endif ()
  -
  project(RAJAPerfSuite CXX)
  +cmake_minimum_required(VERSION 3.9)
  +
  option(ENABLE_RAJA_SEQUENTIAL "Run sequential variants of RAJA kernels. Disable
  this, and all other variants, to run _only_ raw C loops." On)
  