Bump prettier from 1.11.1 to 1.14.2 (#560) [ci skip]

Bumps [prettier](https://github.com/prettier/prettier) from 1.11.1 to 1.14.2.
- [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/1.11.1...1.14.2)

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

package.json

@@ -80,7 +80,7 @@
     "preact-compat": "^3.18.4",
     "preact-render-spy": "^1.3.0",
     "preact-render-to-json": "^3.6.6",
-    "prettier": "^1.11.1",
+    "prettier": "^1.14.2",
     "sass-loader": "^7.0.2",
     "style-loader": "^0.23.0",
     "webpack-dev-server": "^2.11.3"

yarn.lock

@@ -7840,9 +7840,9 @@ preserve@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
 
-prettier@^1.11.1:
-  version "1.11.1"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.11.1.tgz#61e43fc4cd44e68f2b0dfc2c38cd4bb0fccdcc75"
+prettier@^1.14.2:
+  version "1.14.2"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.14.2.tgz#0ac1c6e1a90baa22a62925f41963c841983282f9"
 
 pretty-error@^2.0.2:
   version "2.1.1"