Bump websocket-extensions from 0.1.3 to 0.1.4 in /website (#1228)

Summary:
Bumps [websocket-extensions](https://github.com/faye/websocket-extensions-node) from 0.1.3 to 0.1.4.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/faye/websocket-extensions-node/blob/master/CHANGELOG.md">websocket-extensions's changelog</a>.</em></p>
<blockquote>
<h3>0.1.4 / 2020-06-02</h3>
<ul>
<li>Remove a ReDoS vulnerability in the header parser (CVE-2020-7662, reported by
Robert McLaughlin)</li>
<li>Change license from MIT to Apache 2.0</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="8efd0cd6e3"><code>8efd0cd</code></a> Bump version to 0.1.4</li>
<li><a href="3dad4ad44a"><code>3dad4ad</code></a> Remove ReDoS vulnerability in the Sec-WebSocket-Extensions header parser</li>
<li><a href="4a76c75efb"><code>4a76c75</code></a> Add Node versions 13 and 14 on Travis</li>
<li><a href="44a677a9c0"><code>44a677a</code></a> Formatting change: {...} should have spaces inside the braces</li>
<li><a href="f6c50aba0c"><code>f6c50ab</code></a> Let npm reformat package.json</li>
<li><a href="2d211f3705"><code>2d211f3</code></a> Change markdown formatting of docs.</li>
<li><a href="0b620834cc"><code>0b62083</code></a> Update Travis target versions.</li>
<li><a href="729a465307"><code>729a465</code></a> Switch license to Apache 2.0.</li>
<li>See full diff in <a href="https://github.com/faye/websocket-extensions-node/compare/0.1.3...0.1.4">compare view</a></li>
</ul>
</details>
<br />

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</details>
Pull Request resolved: https://github.com/facebook/flipper/pull/1228

Reviewed By: mweststrate

Differential Revision: D21927370

Pulled By: nikoant

fbshipit-source-id: 6047bc0a5db1182c03742f459555f0df6bedbaac

website/yarn.lock

@@ -10285,9 +10285,9 @@ websocket-driver@>=0.5.1:
     websocket-extensions ">=0.1.1"
 
 websocket-extensions@>=0.1.1:
-  version "0.1.3"
-  resolved "https://registry.yarnpkg.com/websocket-extensions/-/websocket-extensions-0.1.3.tgz#5d2ff22977003ec687a4b87073dfbbac146ccf29"
-  integrity sha512-nqHUnMXmBzT0w570r2JpJxfiSD1IzoI+HGVdd3aZ0yNi3ngvQ4jv1dtHt5VGxfI2yj5yqImPhOK4vmIh2xMbGg==
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/websocket-extensions/-/websocket-extensions-0.1.4.tgz#7f8473bc839dfd87608adb95d7eb075211578a42"
+  integrity sha512-OqedPIGOfsDlo31UNwYbCFMSaO9m9G/0faIHj5/dZFDMFqPTcx6UwqyOy3COEaEOg/9VsGIpdqn62W5KhoKSpg==
 
 whatwg-url@^7.0.0:
   version "7.1.0"