message: Fix incompatibility with future Bazel
  The + operator on dictionaries will be removed
  See
diff: @@ -190,7 +190,9 @@ _INCLUDE_PRIVATE_HWLOC_AUTOIGEN_CONFIG_H_CUDA_SUBS = {
  "#undef HAVE_CUDA": "#undef HAVE_CUDA 1",
  "#undef HAVE_CUDA_H": "#undef HAVE_CUDA_H 1",
  "#undef HAVE_CUDA_RUNTIME_API_H": "#undef HAVE_CUDA_RUNTIME_API_H 1",
  -} + _INCLUDE_PRIVATE_HWLOC_AUTOIGEN_CONFIG_H_COMMON_SUBS
  +}
  +
  +_INCLUDE_PRIVATE_HWLOC_AUTOIGEN_CONFIG_H_CUDA_SUBS.update(_INCLUDE_PRIVATE_HWLOC_AUTOIGEN_CONFIG_H_COMMON_SUBS)
  template_rule(
  name = "include_private_hwloc_autogen__config_h",
  