chore(starters): update dependency prettier to ^1.17.0 (#13329)

This PR contains the following updates:

| Package | Type | Update | Change | References |
|---|---|---|---|---|
| prettier | devDependencies | minor | [`^1.16.4` -> `^1.17.0`](https://diff.intrinsic.com/prettier/1.16.4/1.17.0) | [homepage](https://prettier.io), [source](https://togithub.com/prettier/prettier) |

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### Release Notes

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

### [`v1.17.0`](https://togithub.com/prettier/prettier/blob/master/CHANGELOG.md#&#8203;1170)

[Compare Source](https://togithub.com/prettier/prettier/compare/1.16.4...1.17.0)

[diff](https://togithub.com/prettier/prettier/compare/1.16.2...1.17.0)

🔗 [Release Notes](https://prettier.io/blog/2019/04/12/1.17.0.html)

</details>

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package.json

@@ -18,7 +18,7 @@
     "react-dom": "^16.8.6"
   },
   "devDependencies": {
-    "prettier": "^1.16.4"
+    "prettier": "^1.17.0"
   },
   "repository": {
     "type": "git",