fix 'yum update' in nightly wheels tests

[jameslamb]

Nightly tests on release/26.06 have been failing recently. Only CUDA 12.x wheels tests on Rocky Linux 8 have been failing, like this:

Rocky Linux 8 - AppStream                       8.3 MB/s |  29 MB     00:03    
Rocky Linux 8 - BaseOS                          2.6 MB/s |  59 MB     00:23    
Rocky Linux 8 - Extras                           32 kB/s |  15 kB     00:00    
cuda                                             12 MB/s | 7.1 MB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64  4.0 MB/s |  14 MB     00:03    
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)
Error: 
 Problem: package cuda-cudart-devel-12-9-12.9.79-1.x86_64 from @System requires cuda-cccl-12-9, but none of the providers can be installed
  - package cccl-13-3-13.3.3.3.1-1.x86_64 from cuda obsoletes cuda-cccl-12-9 provided by cuda-cccl-12-9-12.9.27-1.x86_64 from @System
  - package cccl-13-3-13.3.3.3.1-1.x86_64 from cuda obsoletes cuda-cccl-12-9 provided by cuda-cccl-12-9-12.9.27-1.x86_64 from cuda
  - cannot install the best update candidate for package cuda-cudart-devel-12-9-12.9.79-1.x86_64
  - cannot install the best update candidate for package cuda-cccl-12-9-12.9.27-1.x86_64

(build link)

This has the same root cause as rapidsai/ci-imgs#411, see that issue for more details.

rapidsai/ci-imgs#412 already resolves this on main (affects all dnf upgrade / yum upgrade calls in RAPIDS CI images), but wasn't backported to release/26.06.

To avoid building new CI images close to release, this backports the fix from rapidsai/ci-imgs#412 to cuCIM's CI... passing --nobest to yum upgrade, so it will fall back to a different solve and not be broken by the renaming of the CCCL packages.

Notes for Reviewers

How I tested this

On the first commit, ran wheel tests with matrix_type: nightly.

Saw all the tests jobs succeed: https://github.com/rapidsai/cucim/actions/runs/26840592270/job/79149819727?pr=1099

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[jameslamb]

Suggested change

matrix_type: "nightly"

TODO: revert before merging

(just doing this to test that it'll fix nightly tests)

[jameslamb]

Saw all nightly wheel tests pass 🎉

https://github.com/rapidsai/cucim/actions/runs/26840592270/job/79149819727?pr=1099

[jameslamb]

/ok to test

[grlee77]

Thanks, this looks like a good way to resolve the issue

[jakirkham]

Thanks James! 🙏