message: Updates Uberenv's spack commit to HEAD of develop on
  Includes a fix for ROCM_PATH that was preventing RAJA from building through uberenv/spack.
diff: "package_final_phase": "initconfig",
  "package_source_dir": "../..",
  "spack_url": "https://github.com/spack/spack.git",
  -"spack_commit": "bb1cd430c0d6f8bebfb655c65244a25bcc325d8d",
  +"spack_commit": "ddc6e233c70273dd5dfd8dab31729eaf538693b8",
  "spack_configs_path": "scripts/spack/configs",
  "spack_packages_path": "scripts/spack/packages",
  "spack_concretizer": "clingo",
  