Small update to cuml-accel limitations

[jcrist]

• Bump sklearn versions we test with.
• Remove no longer relevant non-numeric limitation.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Run ID: cde83398-c401-4bb1-8277-fcab0bf95628

📥 Commits

Reviewing files that changed from the base of the PR and between 2076715 and f9ede9a.

📒 Files selected for processing (1)

• docs/source/cuml-accel/limitations.rst

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📝 Walkthrough

Summary by CodeRabbit

• Documentation
  • Updated scikit-learn compatibility window from versions 1.4–1.7 to 1.5–1.8.
  • Removed guidance regarding pre-encoding of target values and string-label array requirements.

Walkthrough

Documentation update to limitations.rst that removes guidance requiring target variable pre-encoding into numeric form and updates the tested scikit-learn compatibility window from versions 1.4–1.7 to 1.5–1.8.

Changes

Cohort / File(s)	Summary
Documentation Updates docs/source/cuml-accel/limitations.rst	Removed guidance on pre-encoding target variable y into numeric/categorical form and removed reference to scikit-learn's LabelEncoder. Updated scikit-learn compatibility testing window from 1.4–1.7 to 1.5–1.8.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• Forward merge from release/26.04 #7910: Updates scikit-learn version compatibility constraints to align with minimum version requirements.
• Bump scipy minimum required version to 1.14.0. #7857: Modifies scikit-learn minimum version requirement to >=1.5 in dependency specifications.

Suggested reviewers

• viclafargue

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately reflects the main change: a documentation update to the cuml-accel limitations file, updating sklearn versions and removing a non-numeric limitation.
Description check	✅ Passed	The description is directly related to the changeset, listing the two main modifications: bumping sklearn versions and removing a non-numeric limitation.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[betatim]

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