Bump prettier from 1.16.4 to 1.18.2

Bumps [prettier](https://github.com/prettier/prettier) from 1.16.4 to 1.18.2.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/master/CHANGELOG.md)
- [Commits](prettier/prettier@1.16.4...1.18.2)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -62,7 +62,7 @@
     "http-server": "^0.11.1",
     "jest": "^24.5.0",
     "jest-emotion": "^10.0.11",
-    "prettier": "^1.10.2",
+    "prettier": "^1.18.2",
     "testcafe": "^1.2.1",
     "webpack": "^4.29.6"
   }