build(deps): Bump remark-gfm from 3.0.1 to 4.0.0 in /api-editor/gui (#1487)

Bumps [remark-gfm](https://github.com/remarkjs/remark-gfm) from 3.0.1 to
4.0.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/remarkjs/remark-gfm/releases">remark-gfm's
releases</a>.</em></p>
<blockquote>
<h2>4.0.0</h2>
<h4>Change</h4>
<ul>
<li>b8cc334 Update <code>@types/mdast</code>, <code>unified</code>,
utilities
<strong>migrate</strong>: update too</li>
<li>9eb0f54 Change to use <code>exports</code>
<strong>migrate</strong>: don’t use private APIs</li>
<li>5715c93 Change to require Node.js 16
<strong>migrate</strong>: update too</li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/remarkjs/remark-gfm/compare/3.0.1...4.0.0">https://github.com/remarkjs/remark-gfm/compare/3.0.1...4.0.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/remarkjs/remark-gfm/commit/d8e110edf0799741e0954a92dd22fc143b803bdb"><code>d8e110e</code></a>
4.0.0</li>
<li><a
href="https://github.com/remarkjs/remark-gfm/commit/9eb0f54cf8ed1e49d666319b1055f818afbfb45c"><code>9eb0f54</code></a>
Change to use <code>exports</code></li>
<li><a
href="https://github.com/remarkjs/remark-gfm/commit/5715c93119bafae6b8b032467dd7913f814c925e"><code>5715c93</code></a>
Change to require Node.js 16</li>
<li><a
href="https://github.com/remarkjs/remark-gfm/commit/a2e09fb76c1ad32261f50fa738e03ae3477950b7"><code>a2e09fb</code></a>
Refactor docs</li>
<li><a
href="https://github.com/remarkjs/remark-gfm/commit/4bf03297e0eb24a457f4e2bfb142a070edfb03b0"><code>4bf0329</code></a>
Refactor to move code to <code>lib/</code></li>
<li><a
href="https://github.com/remarkjs/remark-gfm/commit/bceb8b8b09bed867fdc4fa6b78ac5985dac4d476"><code>bceb8b8</code></a>
Refactor code-style</li>
<li><a
href="https://github.com/remarkjs/remark-gfm/commit/99b28576dfbda6ff72c6b18f01b31c03ecab7917"><code>99b2857</code></a>
Refactor to use <code>node:test</code></li>
<li><a
href="https://github.com/remarkjs/remark-gfm/commit/cbc446b17627719934ba68b9badcb3e0814df530"><code>cbc446b</code></a>
Refactor <code>.npmrc</code></li>
<li><a
href="https://github.com/remarkjs/remark-gfm/commit/fef030aab1926d52c80e303274c84a2f6ca5c639"><code>fef030a</code></a>
Refactor Actions</li>
<li><a
href="https://github.com/remarkjs/remark-gfm/commit/b563caf1da8c813cd7b4bddcfaa094be1df3cfdc"><code>b563caf</code></a>
Refactor <code>package.json</code></li>
<li>Additional commits viewable in <a
href="https://github.com/remarkjs/remark-gfm/compare/3.0.1...4.0.0">compare
view</a></li>
</ul>
</details>
<br />


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