Auto merge of #3613 - rust-lang:renovate/ember-a11y-testing-4.x, r=Turbo87

Update dependency ember-a11y-testing to v4.0.7

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [ember-a11y-testing](https://togithub.com/ember-a11y/ember-a11y-testing) | [`4.0.6` -> `4.0.7`](https://renovatebot.com/diffs/npm/ember-a11y-testing/4.0.6/4.0.7) | [![age](https://badges.renovateapi.com/packages/npm/ember-a11y-testing/4.0.7/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/npm/ember-a11y-testing/4.0.7/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/npm/ember-a11y-testing/4.0.7/compatibility-slim/4.0.6)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/npm/ember-a11y-testing/4.0.7/confidence-slim/4.0.6)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>ember-a11y/ember-a11y-testing</summary>

### [`v4.0.7`](https://togithub.com/ember-a11y/ember-a11y-testing/blob/master/CHANGELOG.md#v407-2021-05-11)

[Compare Source](https://togithub.com/ember-a11y/ember-a11y-testing/compare/v4.0.6...v4.0.7)

##### 🐛 Bug Fix

-   [#&#8203;261](https://togithub.com/ember-a11y/ember-a11y-testing/pull/261) Removes deprecated `content-for` styles ([`@&#8203;drewlee](https://togithub.com/drewlee))`

##### Committers: 1

-   Andrew A Lee ([`@&#8203;drewlee](https://togithub.com/drewlee))`

</details>

---

### Configuration

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🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box.

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Author: bors

package.json

@@ -63,7 +63,7 @@
     "babel-eslint": "10.1.0",
     "babel-plugin-transform-object-rest-spread": "6.26.0",
     "broccoli-asset-rev": "3.0.0",
-    "ember-a11y-testing": "4.0.6",
+    "ember-a11y-testing": "4.0.7",
     "ember-api-actions": "0.2.9",
     "ember-auto-import": "1.11.3",
     "ember-cli": "3.26.1",

yarn.lock

@@ -6103,10 +6103,10 @@ elliptic@^6.5.3:
     minimalistic-assert "^1.0.1"
     minimalistic-crypto-utils "^1.0.1"
 
-[email protected].6:
-  version "4.0.6"
-  resolved "https://registry.yarnpkg.com/ember-a11y-testing/-/ember-a11y-testing-4.0.6.tgz#3e5aaa0239655122a3a4e1c097b4e07eb5fd3d74"
-  integrity sha512-Mas9vLuzeiccc9vpNWEaSqW0YK/hq7su9iglvMHya2pkGOxLETkq6jPUPlqxuE+CLItJQQJDZ4h6wpBVUDnvLw==
+[email protected].7:
+  version "4.0.7"
+  resolved "https://registry.yarnpkg.com/ember-a11y-testing/-/ember-a11y-testing-4.0.7.tgz#1e6f23831a7926c1c35f7449e2bb9e3d8db56982"
+  integrity sha512-RbV4fKDnKHuIpJOnjVWs+ePlivXbv+B7JWPLsCM4bU9nGR+tbJGv49y5SaN1+hTcHg0bD0mnD5YUehpHf453Fw==
   dependencies:
     "@ember/test-waiters" "^2.4.3"
     axe-core "^4.1.4"