Build/Test Tools: Reference reusable-prepare-gutenberg.yml at trunk in the 7.0 PHPUnit workflow

[lancewillett]

This updates the 7.0 PHPUnit workflow to reference reusable-prepare-gutenberg.yml@trunk instead of a pinned commit SHA.

The reusable-phpunit-tests-v3.yml callers already use @trunk. Keeping both shared workflows on the same ref prevents their output contract from drifting and preserves the one-version-to-maintain intent.

No PHP matrix or caller wiring changed.

Trac ticket: https://core.trac.wordpress.org/ticket/65721

Testing

• actionlint .github/workflows/phpunit-tests.yml
• git diff --check

Use of AI Tools

AI assistance: Yes
Tool(s): Codex
Model(s): GPT-5
Used for: Applied and validated the one-line workflow reference change. The final diff was reviewed by me.

---

This Pull Request is for code review only. Please keep all other discussion in the Trac ticket. Do not merge this Pull Request.

[Copilot]

Pull request overview

Updates the GitHub Actions 7.0 PHPUnit workflow to track the reusable-prepare-gutenberg.yml reusable workflow on trunk (instead of a pinned commit), aiming to keep the “prepare” producer aligned with other PHPUnit workflow consumers already following @trunk.

Changes:

• Switch prepare-gutenberg to use reusable-prepare-gutenberg.yml@trunk rather than a pinned SHA.
• Add an inline note and a zizmor suppression for the unpinned uses: reference.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[github-actions]

The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

Core Committers: Use this line as a base for the props when committing in SVN:

Props lancewillett.

To understand the WordPress project's expectations around crediting contributors, please review the Contributor Attribution page in the Core Handbook.

[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (1)

.github/workflows/phpunit-tests.yml:67

• The inline zizmor: ignore[unpinned-uses] suppression appears to be unused/inconsistent in this repo: this is the only zizmor: annotation, and there are multiple other uses: ...@trunk entries in this workflow and others without suppression. Consider removing the suppression to avoid confusion (or, if zizmor is actually enforced, suppress/pin consistently across all similar uses: lines).

    uses: WordPress/wordpress-develop/.github/workflows/reusable-prepare-gutenberg.yml@trunk # zizmor: ignore[unpinned-uses]