Bump prettier from 1.16.3 to 1.16.4

Bumps [prettier](https://github.com/prettier/prettier) from 1.16.3 to 1.16.4.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prettier/prettier/compare/1.16.3...1.16.4)

Signed-off-by: dependabot[bot] <support@dependabot.com>

package-lock.json

@@ -6790,9 +6790,9 @@
       "dev": true
     },
     "prettier": {
-      "version": "1.16.3",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.16.3.tgz",
-      "integrity": "sha512-kn/GU6SMRYPxUakNXhpP0EedT/KmaPzr0H5lIsDogrykbaxOpOfAFfk5XA7DZrJyMAv1wlMV3CPcZruGXVVUZw==",
+      "version": "1.16.4",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.16.4.tgz",
+      "integrity": "sha512-ZzWuos7TI5CKUeQAtFd6Zhm2s6EpAD/ZLApIhsF9pRvRtM1RFo61dM/4MSRUA0SuLugA/zgrZD8m0BaY46Og7g==",
       "dev": true
     },
     "prettier-linter-helpers": {

package.json

@@ -48,7 +48,7 @@
     "mocha": "^5.2.0",
     "mocha-webpack": "^2.0.0-beta.0",
     "node-sass": "^4.11.0",
-    "prettier": "1.16.3",
+    "prettier": "1.16.4",
     "sass-loader": "^7.0.3",
     "sinon": "^7.2.3",
     "url-loader": "^1.1.2",