Auto merge of #2646 - rust-lang:dependabot/npm_and_yarn/ember-data-3.20.0, r=Turbo87

Bump ember-data from 3.19.0 to 3.20.0

Bumps [ember-data](https://github.com/emberjs/data) from 3.19.0 to 3.20.0.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/emberjs/data/blob/v3.20.0/CHANGELOG.md">ember-data's changelog</a>.</em></p>
<blockquote>
<h2>Release 3.20.0 (July 16, 2020)</h2>
<ul>
<li><a href="https://github-redirect.dependabot.com/emberjs/data/pull/7167">#7167</a> [FEATURE] JSONAPI Serializer asserts instead of warning when passed EmbeddedRecordsMixin, opt out with <code>isEmbeddedRecordsMixinCompatible: true</code></li>
<li><a href="https://github-redirect.dependabot.com/emberjs/data/pull/7198">#7198</a> [DOC] Update documentation around behavior of attr (<a href="https://github-redirect.dependabot.com/emberjs/data/issues/7198">#7198</a>)</li>
<li><a href="https://github.com/emberjs/data/commit/7d7e38ebdcfebbf368d31f1ccd53066fcd5d48b3">#7200</a> [DOC] Use native syntax in JSONAPISerializer documentation (<a href="https://github-redirect.dependabot.com/emberjs/data/issues/7200">#7200</a>)</li>
<li><a href="https://github-redirect.dependabot.com/emberjs/data/pull/7096">#7096</a> [PERFORMANCE] Optimize visiting the relating records</li>
<li><a href="https://github-redirect.dependabot.com/emberjs/data/pull/7090">#7090</a> [PERFORMANCE] Optimize the update of a has-many relationship</li>
<li><a href="https://github-redirect.dependabot.com/emberjs/data/pull/7235">#7235</a> [BUGFIX] Allow createRecord responses without a type</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/emberjs/data/commit/bb4326d8fbd2d95b0e1945c9c3cf7e08890860f6"><code>bb4326d</code></a> v3.20.0</li>
<li><a href="https://github.com/emberjs/data/commit/df33f422dbcf2032f16c72461efbc45260c78e52"><code>df33f42</code></a> Update Changelog and ember-source for v3.20.0</li>
<li><a href="https://github.com/emberjs/data/commit/4e3987f5f645eda7eafa03a5dcac531808ba41ac"><code>4e3987f</code></a> Optimize visiting the relating records</li>
<li><a href="https://github.com/emberjs/data/commit/38239c5d2307dd3d5976323e975c6a684920cffa"><code>38239c5</code></a> Optimize the update of a has-many relationship.</li>
<li><a href="https://github.com/emberjs/data/commit/591cb4ab4984918cc3ee1a6a1418ae30f3b9e277"><code>591cb4a</code></a> [BUGIFX] Allow createRecord responses without a type</li>
<li><a href="https://github.com/emberjs/data/commit/8cebb501f9d98a40c8c1d72ef3d3be08b1e1ddca"><code>8cebb50</code></a> v3.20.0-beta.0</li>
<li><a href="https://github.com/emberjs/data/commit/e25cbc7ec9d72b8713658f31dc3ca72c7253ce1e"><code>e25cbc7</code></a> Update Changelog for v3.19.0</li>
<li><a href="https://github.com/emberjs/data/commit/7d7e38ebdcfebbf368d31f1ccd53066fcd5d48b3"><code>7d7e38e</code></a> [DOC] Use native syntax in JSONAPISerializer documentation (<a href="https://github-redirect.dependabot.com/emberjs/data/issues/7200">#7200</a>)</li>
<li><a href="https://github.com/emberjs/data/commit/70b0c55e1a950bed1da64d0ecb4eaa0d5df92f9f"><code>70b0c55</code></a> [DOC] Update documentation around behavior of attr (<a href="https://github-redirect.dependabot.com/emberjs/data/issues/7198">#7198</a>)</li>
<li><a href="https://github.com/emberjs/data/commit/df576ec6023a2f26c4af25ef048885c34fe06f57"><code>df576ec</code></a> Reduce dependabot frequency</li>
<li>Additional commits viewable in <a href="https://github.com/emberjs/data/compare/v3.19.0...v3.20.0">compare view</a></li>
</ul>
</details>
<br />

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</details>

Author: bors