Bump mock-fs from 5.0.0 to 5.1.2 in /desktop (#3114)

Summary:
Bumps [mock-fs](https://github.com/tschaub/mock-fs) from 5.0.0 to 5.1.2.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/tschaub/mock-fs/blob/main/changelog.md">mock-fs's changelog</a>.</em></p>
<blockquote>
<h2>5.1.2</h2>
<ul>
<li>Avoid open <code>FSREQCALLBACK</code> file handles (thanks <a href="https://github.com/jloleysens"><code>@​jloleysens</code></a>, see <a href="https://github-redirect.dependabot.com/tschaub/mock-fs/issues/342">https://github.com/facebook/flipper/issues/342</a><a href="https://github-redirect.dependabot.com/tschaub/mock-fs/issues/342">https://github.com/facebook/flipper/issues/342</a>)</li>
</ul>
<h2>5.1.1</h2>
<ul>
<li>Added <code>engines</code> to <code>package.json</code> to clarify that Node &gt;= 12 is required (thanks <a href="https://github.com/tillig"><code>@​tillig</code></a>, see <a href="https://github-redirect.dependabot.com/tschaub/mock-fs/issues/337">https://github.com/facebook/flipper/issues/337</a><a href="https://github-redirect.dependabot.com/tschaub/mock-fs/issues/337">https://github.com/facebook/flipper/issues/337</a>)</li>
</ul>
<h2>5.1.0</h2>
<ul>
<li>Added support for Node &gt;= 16.3 (thanks <a href="https://github.com/Rugvip"><code>@​Rugvip</code></a>, see <a href="https://github-redirect.dependabot.com/tschaub/mock-fs/issues/335">https://github.com/facebook/flipper/issues/335</a><a href="https://github-redirect.dependabot.com/tschaub/mock-fs/issues/335">https://github.com/facebook/flipper/issues/335</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="ebfc4b7aa9"><code>ebfc4b7</code></a> 5.1.2</li>
<li><a href="7e3a746e26"><code>7e3a746</code></a> Log changes</li>
<li><a href="abd285a86e"><code>abd285a</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/tschaub/mock-fs/issues/342">https://github.com/facebook/flipper/issues/342</a> from jloleysens/fix/call-original-fsBinding-open</li>
<li><a href="9bbd98719f"><code>9bbd987</code></a> also return the result of originalOpen</li>
<li><a href="2d48c6cd58"><code>2d48c6c</code></a> call original fsBinding.open when collecting ReadFileContext proto to avoid c...</li>
<li><a href="313cd08c4a"><code>313cd08</code></a> 5.1.1</li>
<li><a href="69283aa62c"><code>69283aa</code></a> Log changes</li>
<li><a href="31d901796c"><code>31d9017</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/tschaub/mock-fs/issues/337">https://github.com/facebook/flipper/issues/337</a> from tillig/patch-1</li>
<li><a href="0b8d63e77c"><code>0b8d63e</code></a> <code>engines</code> block to specify min requirements</li>
<li><a href="8a6ad90999"><code>8a6ad90</code></a> 5.1.0</li>
<li>Additional commits viewable in <a href="https://github.com/tschaub/mock-fs/compare/v5.0.0...v5.1.2">compare view</a></li>
</ul>
</details>
<br />

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</details>

Pull Request resolved: https://github.com/facebook/flipper/pull/3114

Reviewed By: jknoxville

Differential Revision: D32698511

Pulled By: passy

fbshipit-source-id: 0e1a698bab4ffdf01186184176848d8180789400

desktop/pkg-lib/package.json

@@ -24,7 +24,7 @@
     "flipper-test-utils": "0.0.0",
     "globby": "^12.0.2",
     "jest": "^26.6.3",
-    "mock-fs": "^5.0.0",
+    "mock-fs": "^5.1.2",
     "prettier": "^2.4.1",
     "rimraf": "^3.0.2",
     "ts-jest": "^26.5.6",