Auto merge of #497 - servo:dependabot/npm_and_yarn/examples/canvas_webgl_minimal/www/ajv-6.12.6, r=jdm

Bump ajv from 6.5.3 to 6.12.6 in /examples/canvas_webgl_minimal/www

Bumps [ajv](https://github.com/ajv-validator/ajv) from 6.5.3 to 6.12.6.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/ajv-validator/ajv/releases">ajv's releases</a>.</em></p>
<blockquote>
<h2>v6.12.6</h2>
<p>Fix performance issue of &quot;url&quot; format.</p>
<h2>v6.12.5</h2>
<p>Fix uri scheme validation (<a href="https://github.com/ChALkeR"><code>@​ChALkeR</code></a>).
Fix boolean schemas with strictKeywords option (<a href="https://github-redirect.dependabot.com/ajv-validator/ajv/issues/1270">#1270</a>)</p>
<h2>v6.12.4</h2>
<p>Fix: coercion of one-item arrays to scalar that should fail validation (<a href="https://runkit.com/esp/5f3672ba2f6642001ae27411">failing example</a>).</p>
<h2>v6.12.3</h2>
<p>Pass schema object to processCode function
Option for strictNumbers (<a href="https://github.com/issacgerges"><code>@​issacgerges</code></a>, <a href="https://github-redirect.dependabot.com/ajv-validator/ajv/issues/1128">#1128</a>)
Fixed vulnerability related to untrusted schemas (<a href="https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=CVE-2020-15366">CVE-2020-15366</a>)</p>
<h2>v6.12.2</h2>
<p>Removed post-install script</p>
<h2>v6.12.1</h2>
<p>Docs and dependency updates</p>
<h2>v6.12.0</h2>
<p>Improved hostname validation (<a href="https://github.com/sambauers"><code>@​sambauers</code></a>, <a href="https://github-redirect.dependabot.com/ajv-validator/ajv/issues/1143">#1143</a>)
Option <code>keywords</code> to add custom keywords (<a href="https://github.com/franciscomorais"><code>@​franciscomorais</code></a>, <a href="https://github-redirect.dependabot.com/ajv-validator/ajv/issues/1137">#1137</a>)
Types fixes (<a href="https://github.com/boenrobot"><code>@​boenrobot</code></a>, <a href="https://github.com/MattiAstedrone"><code>@​MattiAstedrone</code></a>)
Docs:</p>
<ul>
<li><a href="https://github.com/epoberezkin/ajv#error-logging">error logging</a> example (<a href="https://github.com/RadiationSickness"><code>@​RadiationSickness</code></a>)</li>
<li>TypeScript usage notes (<a href="https://github.com/thetric"><code>@​thetric</code></a>)</li>
</ul>
<h2>v6.11.0</h2>
<p>Time formats support two digit and colon-less variants of timezone offset (<a href="https://github-redirect.dependabot.com/ajv-validator/ajv/issues/1061">#1061</a> , <a href="https://github.com/cjpillsbury"><code>@​cjpillsbury</code></a>)
Docs: RegExp related security considerations
Tests: Disabled failing typescript test</p>
<h2>v6.10.2</h2>
<p>Fix: the unknown keywords were ignored with the option <code>strictKeywords: true</code> (instead of failing compilation) in some sub-schemas (e.g. anyOf), when the sub-schema didn't have known keywords.</p>
<h2>v6.10.1</h2>
<p>Fix types
Fix addSchema (<a href="https://github-redirect.dependabot.com/ajv-validator/ajv/issues/1001">#1001</a>)
Update dependencies</p>
<h2>v6.10.0</h2>
<p>Option <code>strictDefaults</code> to report ignored defaults (<a href="https://github-redirect.dependabot.com/ajv-validator/ajv/issues/957">#957</a>, <a href="https://github.com/not-an-aardvark"><code>@​not-an-aardvark</code></a>)
Option <code>strictKeywords</code> to report unknown keywords (<a href="https://github-redirect.dependabot.com/ajv-validator/ajv/issues/781">#781</a>)</p>
<h2>v6.9.0</h2>
<p>OpenAPI keyword <code>nullable</code> can be any boolean (and not only <code>true</code>).
Custom keyword definition changes:</p>
<ul>
<li><code>dependencies</code> option in  to require the presence of keywords in the same schema.</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="fe591439f3"><code>fe59143</code></a> 6.12.6</li>
<li><a href="d580d3e8ac"><code>d580d3e</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/ajv-validator/ajv/issues/1298">#1298</a> from ajv-validator/fix-url</li>
<li><a href="fd363896a8"><code>fd36389</code></a> fix: regular expression for &quot;url&quot; format</li>
<li><a href="490e34c484"><code>490e34c</code></a> docs: link to v7-beta branch</li>
<li><a href="9cd93a1bdb"><code>9cd93a1</code></a> docs: note about v7 in readme</li>
<li><a href="877d286e7f"><code>877d286</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/ajv-validator/ajv/issues/1262">#1262</a> from b4h0-c4t/refactor-opt-object-type</li>
<li><a href="f1c8e45b9c"><code>f1c8e45</code></a> 6.12.5</li>
<li><a href="764035e201"><code>764035e</code></a> Merge branch 'ChALkeR-chalker/fix-comma'</li>
<li><a href="37981602ce"><code>3798160</code></a> Merge branch 'chalker/fix-comma' of git://github.com/ChALkeR/ajv into ChALkeR...</li>
<li><a href="a3c7ebab22"><code>a3c7eba</code></a> Merge branch 'refactor-opt-object-type' of github.com:b4h0-c4t/ajv into refac...</li>
<li>Additional commits viewable in <a href="https://github.com/ajv-validator/ajv/compare/v6.5.3...v6.12.6">compare view</a></li>
</ul>
</details>
<br />

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examples/canvas_webgl_minimal/www/package-lock.json

@@ -237,15 +237,23 @@
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         "uri-js": "^4.2.2"
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+          "dev": true
+        }
       }
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     "ajv-errors": {
@@ -1877,12 +1885,6 @@
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-      "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-2.0.1.tgz",
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@@ -5500,18 +5502,6 @@
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         "ajv-keywords": {
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           "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-3.4.1.tgz",
@@ -5521,8 +5511,7 @@
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-          "dev": true
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         "minimist": {
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