ci: reduce timeout for cudf_streaming C++ tests to 5m

[vyasr]

Description

Reduce the timeout for cudf_streaming C++ tests from 30m to 5m in ci/test_cpp.sh.

The cudf_streaming tests are lightweight and complete quickly. The 30m timeout was kept during the initial PR (#22747) out of caution after reviewer feedback (#22747 (comment), #22747 (comment)), but 5m provides ample headroom while catching hangs much sooner.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

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📥 Commits

Reviewing files that changed from the base of the PR and between 22c2a7e and 518eb66.

📒 Files selected for processing (1)

• ci/test_cpp.sh

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📝 Walkthrough

Summary by CodeRabbit

• Chores
  • Reduced the CI timeout for libcudf streaming C++ tests from 30 minutes to 5 minutes. This yields faster feedback on long-running streaming tests but may cause earlier test termination for suites that exceed the new limit.

Walkthrough

The CI test script ci/test_cpp.sh changes the libcudf streaming gtests invocation from timeout 30m ./ci/run_cudf_streaming_ctests.sh -j20 to timeout 5m ./ci/run_cudf_streaming_ctests.sh -j20, shortening the allowed execution time.

Changes

CI streaming tests timeout adjustment

Layer / File(s)	Summary
Update streaming ctests timeout to 5m ci/test_cpp.sh	Replaces timeout 30m with timeout 5m for ./ci/run_cudf_streaming_ctests.sh -j20 in the CI test script.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• rapidsai/cudf#22505: Also modifies CI script timeout parameters for a different test job.

Suggested labels

libcudf

Suggested reviewers

• bdice
• PointKernel
• pentschev

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: reducing the timeout for cudf_streaming C++ tests from 30 minutes to 5 minutes in the CI configuration.
Description check	✅ Passed	The description is directly related to the changeset, explaining the rationale for reducing the timeout, referencing prior discussions, and confirming test coverage and documentation updates.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[vyasr]

FYI @bdice @pentschev

[vyasr]

/merge