Auto merge of #3033 - rust-lang:renovate/prettier-2.x, r=Turbo87

Update dependency prettier to v2.2.0

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [prettier](https://prettier.io) ([source](https://togithub.com/prettier/prettier)) | [`2.1.2` -> `2.2.0`](https://renovatebot.com/diffs/npm/prettier/2.1.2/2.2.0) | ![age](https://badges.renovateapi.com/packages/npm/prettier/2.2.0/age-slim) | [![adoption](https://badges.renovateapi.com/packages/npm/prettier/2.2.0/adoption-slim)](https://resources.whitesourcesoftware.com/news-whitesource/merge-confidence-feature) | [![passing](https://badges.renovateapi.com/packages/npm/prettier/2.2.0/compatibility-slim/2.1.2)](https://resources.whitesourcesoftware.com/news-whitesource/merge-confidence-feature) | [![confidence](https://badges.renovateapi.com/packages/npm/prettier/2.2.0/confidence-slim/2.1.2)](https://resources.whitesourcesoftware.com/news-whitesource/merge-confidence-feature) |

---

### Release Notes

<details>
<summary>prettier/prettier</summary>

### [`v2.2.0`](https://togithub.com/prettier/prettier/blob/master/CHANGELOG.md#&#8203;220)

[Compare Source](https://togithub.com/prettier/prettier/compare/2.1.2...2.2.0)

[diff](https://togithub.com/prettier/prettier/compare/2.1.2...2.2.0)

🔗 [Release Notes](https://prettier.io/blog/2020/11/20/2.2.0.html)

</details>

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Author: bors

package.json

@@ -116,7 +116,7 @@
     "normalize.css": "8.0.1",
     "nyc": "15.1.0",
     "postcss-nested": "4.2.3",
-    "prettier": "2.1.2",
+    "prettier": "2.2.0",
     "qunit-console-grouper": "0.2.0",
     "qunit-dom": "1.6.0",
     "semver": "7.3.2",

yarn.lock

@@ -12401,10 +12401,10 @@ prettier-linter-helpers@^1.0.0:
   dependencies:
     fast-diff "^1.1.2"
 
-prettier@2.1.2:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.1.2.tgz#3050700dae2e4c8b67c4c3f666cdb8af405e1ce5"
-  integrity sha512-16c7K+x4qVlJg9rEbXl7HEGmQyZlG4R9AgP+oHKRMsMsuk8s+ATStlf1NpDqyBI1HpVyfjLOeMhH2LvuNvV5Vg==
+prettier@2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.2.0.tgz#8a03c7777883b29b37fb2c4348c66a78e980418b"
+  integrity sha512-yYerpkvseM4iKD/BXLYUkQV5aKt4tQPqaGW6EsZjzyu0r7sVZZNPJW4Y8MyKmicp6t42XUPcBVA+H6sB3gqndw==
 
 [email protected]:
   version "5.4.1"