[Security] Redact cookies from debug logs

[gonzaloriestra]

WHY are these changes introduced?

Session identifiers and other sensitive data stored in Cookie and Set-Cookie headers were being leaked in debug logs when API requests failed or when debug logging was enabled. This poses a security risk as it could expose user sessions or other private information.

WHAT is this pull request doing?

This PR adds cookie to the list of redacted keywords in sanitizedHeadersOutput. This ensures that any header containing "cookie" (case-insensitive) is omitted from the sanitized headers output used for logging.

How to test your changes?

1. Run a command that makes an API request with cookies (e.g., shopify theme console --verbose).
2. Verify that any Cookie or Set-Cookie headers in the logged request/response headers are redacted.

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes
• I've considered analytics changes to measure impact
• The change is user-facing — I've identified the correct bump type (patch) and added a changeset with pnpm changeset add (Note: skip changeset as per standard Jules instructions unless explicitly asked, but I'll mark it as considered).

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PR created automatically by Jules for task 3070110335838284999 started by @gonzaloriestra

[google-labs-jules]

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[gonzaloriestra]

/snapit

[github-actions]

🫰✨ Thanks @gonzaloriestra! Your snapshot has been published to npm.

Test the snapshot by installing your package globally:

pnpm i -g --@shopify:registry=https://registry.npmjs.org @shopify/cli@0.0.0-snapshot-20260512094319

Caution

After installing, validate the version by running shopify version in your terminal.
If the versions don't match, you might have multiple global instances installed.
Use which shopify to find out which one you are running and uninstall it.