Pin GitHub Actions to commit SHAs

[github-security-bot]

Pins GitHub Actions uses: references in github/haikus-for-codespaces to immutable commit SHAs.

Summary

Metric	Count
Files changed	2
Files scanned	1
Refs found	1
Refs pinned	1
Skipped refs	0
Warnings	0
Errors	0

Why

Pinning actions to full commit SHAs prevents future tag or branch retargeting from changing workflow behavior without review.

Reviewer notes

• Original refs are preserved in inline comments when possible.
• Pin comments use the Dependabot-compatible original-ref style.
• Branch refs were allowed and pinned to their current HEAD; review mutable-branch pins carefully.
• No minimum action age was enforced for this run.

Pinned refs

Location	Before	After	Resolved as
.github/workflows/stale.yml:21	actions/stale@v5	actions/stale@f7176fd3007623b69d27091f9b9d4ab7995f0a06	tag

Dependabot

• Added .github/dependabot.yml enabling weekly github-actions updates with a 7-day cooldown (cooldown: default-days: 7).
• The cooldown delays applying a newly published action release for 7 days, reducing exposure to a compromised or broken release while keeping you SHA-pinned.

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Generated by pinner 0.1.0.

[Copilot]

🟢 Approval recommended

The SHA and Dependabot configuration are valid and fulfill the stated security objective.

Pull request overview

Pins GitHub Actions dependencies to immutable SHAs and configures automated updates.

Changes:

• Pins actions/stale to the verified v5.2.1 commit.
• Adds weekly Dependabot updates with a seven-day cooldown.

File summaries

File	Description
.github/workflows/stale.yml	Pins the stale action to a commit SHA.
.github/dependabot.yml	Configures controlled GitHub Actions updates.

Review details

• Files reviewed: 2/2 changed files
• Comments generated: 0
• Review effort level: Balanced

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