NRL site updates, spack-packages cylc updates - #2047

Description

This PR updates the site configurations for the four NRL sites. For Blueback, Narwhal, and Nautilus, these are modifications of the existing site configurations required by the recent update from Spack upstream (spack engine, spack-packages). For Atlantis, these updates were made in #2039; this PR updates both the LLVM compiler and the Intel oneAPI compiler to the latest available versions.

The PR includes a submodule pointer update for cylc-related changes in JCSDA/spack-packages#69. I tested these on my laptop; built and ran the cylc-dev environments with Python 3.11, 3.12, and 3.13.

Dependencies

• waiting on Follow-up changes for py-cylc-* (spack-packages PR 5174) spack-packages#69

Issues addressed

None (follow-up changes to #2039

Applications affected

Cylc

Systems affected

NRL sites

Testing

• CI: Note whether the automatic tests (GitHub actions tests that run automatically for every commit) pass or not
  • GitHub actions CI tests pass
  • GitHub actions CI tests do not pass (provide explanation)
  • GitHub actions CI tests skipped (provide explanation if necessary)
• New tests added: List and describe any new tests added to GitHub actions
  • ...
• Additional testing: Add information on any additional tests conducted
  • Built neptune-dev environments on Atlantis, Blueback, Narwhal, and Nautilus with all affected compilers

Checklist

• This PR addresses one issue/problem/enhancement or has a very good reason for not doing so.
• These changes have been tested on the affected systems and applications.
• All dependency PRs/issues have been resolved and this PR can be merged.
• All necessary updates to the documentation (spack-stack wiki) will be made when this PR is merged