Auto merge of #2667 - rust-lang:dependabot/npm_and_yarn/ember-source-3.20.3, r=locks

Bump ember-source from 3.20.2 to 3.20.3

Bumps [ember-source](https://github.com/emberjs/ember.js) from 3.20.2 to 3.20.3.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/emberjs/ember.js/blob/master/CHANGELOG.md">ember-source's changelog</a>.</em></p>
<blockquote>
<h3>v3.20.3 (July 30, 2020)</h3>
<ul>
<li><a href="https://github-redirect.dependabot.com/emberjs/ember.js/pull/19048">#19048</a> [BUGFIX] Update <code>router.js</code> to ensure <code>transition.abort</code> works for query param only transitions</li>
<li><a href="https://github-redirect.dependabot.com/emberjs/ember.js/pull/19059">#19059</a> [BUGFIX] Prevent <code>&lt;base target=&quot;_parent&quot;&gt;</code> from erroring in <code>HistoryLocation</code></li>
<li><a href="https://github-redirect.dependabot.com/emberjs/ember.js/pull/19060">#19060</a> [BUGFIX] Update rendering engine to <code>@glimmer/*</code> 0.55.1</li>
<li><a href="https://github-redirect.dependabot.com/emberjs/ember.js/pull/19063">#19063</a> [DOC] Fix missing docs for <code>{{#in-element}}</code></li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/emberjs/ember.js/commit/2f043eec74181123f8ffae9e4473566ae8ec5830"><code>2f043ee</code></a> 3.20.3</li>
<li><a href="https://github.com/emberjs/ember.js/commit/f6500b9d8dfebb00638eec1bed8354caab13c9cc"><code>f6500b9</code></a> Add v3.20.3 to CHANGELOG.md.</li>
<li><a href="https://github.com/emberjs/ember.js/commit/8d610ed87eca9d5eeb67f40a94894da175776549"><code>8d610ed</code></a> [BUGFIX release] Update to glimmer-vm 0.55.1</li>
<li><a href="https://github.com/emberjs/ember.js/commit/632d1a8771d373af924d0b4d29e87dfb78df79ec"><code>632d1a8</code></a> [BUGFIX lts] Prevent <code>\&lt;base target=&quot;_parent&quot;&gt;</code> from erroring in HistoryLocation</li>
<li><a href="https://github.com/emberjs/ember.js/commit/435e84e5081d95f2089f7c7881e41824bab27293"><code>435e84e</code></a> [BUGFIX lts] Update router.js to ensure transition.abort works for query para...</li>
<li><a href="https://github.com/emberjs/ember.js/commit/9b261612d736bace98536ac6b472fb37f1a53fdf"><code>9b26161</code></a> [DOC release-3-20-1] fix missing docs</li>
<li><a href="https://github.com/emberjs/ember.js/commit/426a2caca93d94e7e0778bd119f39be4aa10b28a"><code>426a2ca</code></a> Add v3.16.9 to CHANGELOG.md.</li>
<li>See full diff in <a href="https://github.com/emberjs/ember.js/compare/v3.20.2...v3.20.3">compare view</a></li>
</ul>
</details>
<br />

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Author: bors

package-lock.json

@@ -87,7 +87,7 @@
     "ember-qunit": "^4.6.0",
     "ember-resolver": "^8.0.0",
     "ember-router-scroll": "^2.0.2",
-    "ember-source": "~3.20.2",
+    "ember-source": "~3.20.3",
     "ember-svg-jar": "^2.2.3",
     "ember-template-lint": "^2.9.1",
     "ember-test-selectors": "^4.1.0",