chore: use public-shared-workflows for sync-prs-to-linear

[dielduarte]

Updates the sync-prs-to-linear workflow to use the action from resend/public-shared-workflows instead of resend/shared-workflows.

Since shared-workflows is a private repo, using actions from it requires org-level settings to be enabled. Moving to a public repo removes that requirement.

Pinned to commit a25ae88674e3c8650510065401a899e323c2d1eb.

---

Summary by cubic

Moves the PR-to-Linear sync to the public resend/public-shared-workflows action to remove org-level settings and simplify setup. Pins to 13c71d228b49123ff7731a45d56bce4540948814, keeps minimal permissions (PRs: read; Issues: write), and runs daily at 10:00 UTC and via workflow_dispatch.

^{Written for commit ebe386d. Summary will update on new commits.}

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
react-email	Ready	Preview, Comment	May 14, 2026 7:36pm
react-email-demo	Ready	Preview, Comment	May 14, 2026 7:36pm

[changeset-bot]

⚠️ No Changeset found

Latest commit: ebe386d

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[cubic-dev-ai]

No issues found across 1 file

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

_{Auto-approved: This change adds a non-critical workflow to sync PRs to Linear using a pinned public action with minimal permissions, posing no risk to production code, business logic, or data integrity.}

[cubic-dev-ai]

0 issues found across 1 file (changes from recent commits).

_{Auto-approved: This change simply updates the action reference from a private to a public repository, preserving the same behavior and pinned commit, with no logic or risk of breakage in core functionality.}