fix(ci): fix configuration for breaking change notification workflow

[jameslamb]

Contributes to rapidsai/shared-workflows#560

Fixes misconfigurations in the GitHub Actions workflow that generates Notifications when PRs are labeled breaking.

Any other changes come from making the configuration for this workflow identical across all RAPIDS repos.

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[jameslamb]

/ok to test 0446455

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 0446455 and 38b13a9.

📒 Files selected for processing (1)

• .github/workflows/trigger-breaking-change-alert.yaml

🚧 Files skipped from review as they are similar to previous changes (1)

• .github/workflows/trigger-breaking-change-alert.yaml

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📝 Walkthrough

Summary by CodeRabbit

• Chores
  • Updated breaking-change notification workflow configuration for proper alert routing.
  • Clarified inline documentation explaining safe trigger usage.
  • Adjusted workflow input to ensure notifications are sent to the correct notifier.

Walkthrough

Updates .github/workflows/trigger-breaking-change-alert.yaml: changes the reusable workflow input slack-webhook-url to use secrets.NV_SLACK_BREAKING_CHANGE_NOTIFIER_APP and adds comments documenting that the PR trigger usage is safe because it does not run PR-specific code.

Changes

Breaking-change alert workflow update

Layer / File(s)	Summary
Slack webhook secret migration and safety documentation .github/workflows/trigger-breaking-change-alert.yaml	Workflow input slack-webhook-url is remapped from ${{ secrets.NV_SLACK_BREAKING_CHANGE_ALERT }} to ${{ secrets.NV_SLACK_BREAKING_CHANGE_NOTIFIER_APP }}. Inline comments state that the pull_request_target trigger usage is safe and does not execute PR-specific code.

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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

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Suggested reviewers

• msarahan
• jakirkham

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: fixing CI configuration for breaking change notification workflow, which matches the core alteration to the slack-webhook-url secret reference.
Description check	✅ Passed	The description is directly related to the changeset, explaining that it fixes misconfigurations in the GitHub Actions workflow for breaking change notifications and aligns configuration across RAPIDS repos.
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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[jakirkham]

Thanks James! 🙏

[jameslamb]

/merge