Update dependencies

[GrantBirki]

This pull request updates js-yaml to 4.3.1 and undici to 6.28.0, updates the dependency policy, and rebuilds the committed Action bundle. It combines #493 and #494.

[Copilot]

Pull request overview

Updates two dependencies with security fixes and refreshes the committed Action bundle.

Changes:

• Updates js-yaml to 4.3.1.
• Resolves undici to 6.28.0.
• Updates dependency policy and bundled runtime code.

Reviewed changes

Copilot reviewed 2 out of 5 changed files in this pull request and generated no comments.

File	Description
package.json	Updates the js-yaml development dependency.
package-lock.json	Locks updated js-yaml and undici releases.
dist/index.js	Incorporates the updated Undici runtime code.
__tests__/dependency-policy.test.ts	Updates the approved dependency version.

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