Auto merge of #460 - servo:dependabot/npm_and_yarn/examples/canvas_webgl_minimal/www/lodash-4.17.21, r=jdm

Bump lodash from 4.17.19 to 4.17.21 in /examples/canvas_webgl_minimal/www

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.19 to 4.17.21.
<details>
<summary>Commits</summary>
<ul>
<li><a href="f299b52f39"><code>f299b52</code></a> Bump to v4.17.21</li>
<li><a href="c4847ebe7d"><code>c4847eb</code></a> Improve performance of <code>toNumber</code>, <code>trim</code> and <code>trimEnd</code> on large input strings</li>
<li><a href="3469357cff"><code>3469357</code></a> Prevent command injection through <code>_.template</code>'s <code>variable</code> option</li>
<li><a href="ded9bc6658"><code>ded9bc6</code></a> Bump to v4.17.20.</li>
<li><a href="63150ef764"><code>63150ef</code></a> Documentation fixes.</li>
<li><a href="00f0f62a97"><code>00f0f62</code></a> test.js: Remove trailing comma.</li>
<li><a href="846e434c7a"><code>846e434</code></a> Temporarily use a custom fork of <code>lodash-cli</code>.</li>
<li><a href="5d046f39cb"><code>5d046f3</code></a> Re-enable Travis tests on <code>4.17</code> branch.</li>
<li><a href="aa816b36d4"><code>aa816b3</code></a> Remove <code>/npm-package</code>.</li>
<li>See full diff in <a href="https://github.com/lodash/lodash/compare/4.17.19...4.17.21">compare view</a></li>
</ul>
</details>
<details>
<summary>Maintainer changes</summary>
<p>This version was pushed to npm by <a href="https://www.npmjs.com/~bnjmnt4n">bnjmnt4n</a>, a new releaser for lodash since your current version.</p>
</details>
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examples/canvas_webgl_minimal/www/package-lock.json

@@ -3398,9 +3398,9 @@
       }
     },
     "lodash": {
-      "version": "4.17.19",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz",
-      "integrity": "sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ==",
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
       "dev": true
     },
     "loglevel": {