[NO MRG] Test XGBoost 2.1.4 with CUDA 12.8 support

[jakirkham]

Testing the recently produced packages of XGBoost 2.1.4 with CUDA 12.8 support.

xref: rapidsai/xgboost-feedstock#79

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[jakirkham]

/ok to test

[jakirkham]

This is a testing PR. No need to review

[jakirkham]

/ok to test

[jakirkham]

Not seeing much coverage of XGBoost in PR tests

It does look like nightlies test XGBoost

From a recent nightly using XGBoost 2.1.4, the tests appear to be passing. However the job fails likely due to warnings raised that are converted to errors

More details in issue: #17952

[bdice]

@jakirkham I think we should use the new xgboost conda packages here, so please consider turning this test PR into a mergeable PR. :)

@Matt711 or @galipremsagar may know why we were using pip wheels to begin with.

[Matt711]

@jakirkham I think we should use the new xgboost conda packages here, so please consider turning this test PR into a mergeable PR. :)

+1

@Matt711 or @galipremsagar may know why we were using pip wheels to begin with.

I think they were added before xgboost 2.0 was available on conda. See comment

[Matt711]

Not seeing much coverage of XGBoost in PR tests

It does look like nightlies test XGBoost

From a recent nightly using XGBoost 2.1.4, the tests appear to be passing. However the job fails likely due to warnings raised that are converted to errors

More details in issue: #17952

I think CI is actually failing due to Ibis dropping pandas support as a backend. I opened #17945 to resolve

[jakirkham]

Thanks Bradley and Matthew! 🙏

Have made this change in a follow up PR: #17959

This one got a little messy from testing 25.02. So thought a less cluttered, more focused one would be a better place to start