Bump cudf-polars CI timeouts

[TomAugspurger]

Description

These two nightly jobs were scheduled on the same (slow) runner and made it to ~95% before being timed out:

• https://github.com/rapidsai/cudf/actions/runs/29991014913/job/89153660965
• https://github.com/rapidsai/cudf/actions/runs/29991014913/job/89153660991

I've bumped the timeout slightly more.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: d54dba47-4cab-4861-9141-0a944135e4fe

📥 Commits

Reviewing files that changed from the base of the PR and between f03e9cd and 34e4d7e.

📒 Files selected for processing (2)

• ci/run_cudf_polars_polars_tests.sh
• ci/run_cudf_polars_pytests.sh

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📝 Walkthrough

Summary by CodeRabbit

• Tests
  • Increased test execution time limits to reduce premature timeouts during GPU and Python test runs.
  • Applied the updated timeout consistently across standard, in-memory, and SPMD test configurations.

Walkthrough

Changes

cudf-polars CI timeouts

Layer / File(s)	Summary
Increase cudf-polars test timeouts ci/run_cudf_polars_polars_tests.sh, ci/run_cudf_polars_pytests.sh	All three cudf-polars pytest invocations increase the --enable-python timeout from 4800 to 5400 seconds.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• rapidsai/cudf#23332: Updates the same timeout wrapper integration in the same cudf-polars CI script.
• rapidsai/cudf#23399: Increases the timeout value in the same two cudf-polars CI scripts.

Suggested labels: cudf-polars

Suggested reviewers: wence-, bdice, vyasr

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main change: increasing cudf-polars CI timeouts.
Description check	✅ Passed	The description is directly related to the timeout increase and explains why it was needed.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[TomAugspurger]

/merge