fix(npm-to-yarn): add missing npm-to-yarn converter for Bun

[Lehoczky]

Pre-flight checklist

• I have read the Contributing Guidelines on pull requests.
• If this is a code change: I have written unit tests and/or added dogfooding pages to fully verify the new behavior.
• If this is a new API or substantial change: the PR has an accompanying issue (closes #0000) and the maintainers have approved on my working plan.

Motivation

Hi there 👋

This PR enables passing bun to the npm2yarn converter. The option is already available to the underlying npm-to-yarn package since v2.1.0 (and we are already using v3.0.0).

Test Plan

Test links

Deploy preview: https://deploy-preview-10803--docusaurus-2.netlify.app/

Related issues/PRs

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[github-actions]

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[slorber]

thanks 👍