Use automatic model selection in issue auto-triage workflow

[priyankatiwari08]

Description

Configures the SqlClient issue auto-triage workflow with model: auto, allowing the GitHub Copilot service to select a relevant available model server-side instead of pinning a specific model. This avoids failures caused by unavailable model defaults while allowing model selection to evolve without workflow updates.

Adds the narrow shell allowlist required by strict-mode compilation, regenerates the workflow lock file with gh-aw v0.88.2, and aligns the lock-verification workflow to the same compiler version.

Issues

Fixes #4640

Testing

• gh aw compile issue-triage --strict --no-emit
• gh aw compile issue-triage --strict
• Recompiled a second time and confirmed the lock file was unchanged
• GitHub Verify gh aw lock files check passed

Guidelines

• Tests added or updated — not applicable; validated with the gh-aw strict compiler
• Public API changes documented — not applicable
• Verified against customer repro — replaced the unavailable model selection with the supported auto selector
• Ensured no breaking changes were introduced

Please review the contribution guidelines:

• Contributing
• Code of Conduct
• Best Practices
• Coding Style
• Review Process

[Copilot]

🔵 Needs a closer look

The regenerated lock workflow introduces a large set of runtime/behavioral changes beyond the model pin, and should get a final human validation pass.

Pull request overview

Pins the SqlClient issue auto-triage agentic workflow to a supported GitHub Copilot model (gpt-5-mini) to address failures caused by an unavailable default model, and regenerates the compiled workflow lockfile.

Changes:

• Set model: gpt-5-mini in the workflow frontmatter.
• Add a strict-mode shell tool allowlist entry in the workflow frontmatter.
• Regenerate issue-triage.lock.yml with gh-aw v0.88.2 and update the gh-aw setup action lock; adjust .gitattributes handling for workflow lock files.

File summaries

File	Description
.github/workflows/issue-triage.md	Pins the Copilot model to gpt-5-mini and adds a bash tool allowlist in frontmatter.
.github/workflows/issue-triage.lock.yml	Regenerated compiled workflow reflecting the pinned model and updated gh-aw runtime/compiler output.
.github/aw/actions-lock.json	Updates the pinned github/gh-aw-actions/setup action to v0.88.2.
.gitattributes	Keeps lock files marked as generated (linguist), adjusts merge behavior by removing merge=ours.

Review details

• Files reviewed: 3/4 changed files
• Comments generated: 0
• Review effort level: Lite

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[Copilot]

🔵 Needs a closer look

The regenerated workflow lock file introduces a large set of runtime changes that warrant final human review to ensure the GitHub Actions workflow still behaves as intended.

Review details

Suppressed comments (1)

Previously missed (1) — in code that hasn't changed since the last review.

.gitattributes:5

• This PR also changes merge behavior for generated workflow lock files by removing merge=ours, but the PR description doesn’t mention or explain this. Since it affects how future lockfile updates are handled during merges, it’d be helpful to document the intent here (or re-add merge=ours if the change was accidental).

• Files reviewed: 4/5 changed files
• Comments generated: 0 new
• Review effort level: Lite

[Copilot]

🟢 Approval recommended

The workflow frontmatter change is consistently reflected in the regenerated lock file and the verification workflow/compiler pins are aligned, with no detected configuration or syntax issues in the changed regions.

Review details

• Files reviewed: 4/5 changed files
• Comments generated: 0 new
• Review effort level: Lite