Update submodule pointer for repos/builtin 2026/08/17

[climbfuji]

Description

Update submodule pointer for repos/builtin 2026/08/17 to include a number of pull requests that were merged into our fork of spack-packages last/this week:

Dependencies

None

Issues addressed

Housekeeping

Applications affected

Unified environment

Systems affected

None

Testing

• CI: Note whether the automatic tests (GitHub actions tests that run automatically for every commit) pass or not
  • GitHub actions CI tests pass IN PROGRESS
  • 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 unified env, neptune env, and cylc-env on my laptop with Intel oneAPI 2026.0.0 and GCC 14.2.1

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

[rickgrubin-noaa]

@climbfuji may I ask that repos/spack_repo/builtin/packages/cuda/package.py be added to this PR, to change:

-    depends_on("libxml2@:2.13", when="@10.1.243:", type="build")
+    depends_on("libxml2", when="@10.1.243:", type="build")

It allows for concretization w/o duplicates for the unified-dev env for this issue. This is the relevant change from the definitive upstream repo.

[climbfuji]

@climbfuji may I ask that repos/spack_repo/builtin/packages/cuda/package.py be added to this PR, to change:

-    depends_on("libxml2@:2.13", when="@10.1.243:", type="build")
+    depends_on("libxml2", when="@10.1.243:", type="build")

It allows for concretization w/o duplicates for the unified-dev env for this issue. This is the relevant change from the definitive upstream repo.

Can you cherry-pick the upstream PR for our fork, please?

[climbfuji]

@climbfuji may I ask that repos/spack_repo/builtin/packages/cuda/package.py be added to this PR, to change:

-    depends_on("libxml2@:2.13", when="@10.1.243:", type="build")
+    depends_on("libxml2", when="@10.1.243:", type="build")

It allows for concretization w/o duplicates for the unified-dev env for this issue. This is the relevant change from the definitive upstream repo.

Can you cherry-pick the upstream PR for our fork, please?

@rickgrubin-noaa I picked up your spack-packages PR in 48c28cf