message: fixed detection of ISPC 1.16.1
diff: ## SPDX-License-Identifier: Apache-2.0
  # ISPC versions to look for, in descending order (newest first)
  -set(ISPC_VERSION_WORKING "1.16.0" "1.15.0" "1.14.1")
  +set(ISPC_VERSION_WORKING "1.16.1" "1.16.0" "1.15.0" "1.14.1")
  list(GET ISPC_VERSION_WORKING -1 ISPC_VERSION_REQUIRED)
  if(NOT ISPC_EXECUTABLE)
  