release/1.9.0: Update site config for Derecho

[climbfuji]

Summary

1. Use oneapi@2024.2.1 instead of intel@2021.x.y
2. Use gcc@12.2.0 instead of gcc@11.2.0
3. Update cray-mpich to 8.1.29/8.1.27 since the old version is no longer available on the system

Also included: update of spack submodule pointer for recently merged bug fixes for crtm@3.1.1-build1 (add symlinks to fix wrong paths in install prefix).

Testing

• Installed the unified environment in a user test directory with oneapi@2024.2.1
• Installed the unified environment in a user test directory with gcc@12.2.0

Applications affected

None

Systems affected

Derecho

Dependencies

• Waiting on Fix bug in crtm for recently added cmake_config_softlinks patch spack#524

Issue(s) addressed

Working towards #1485
Closes #1540

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.