Bump eslint from 5.16.0 to 6.5.1

Bumps [eslint](https://github.com/eslint/eslint) from 5.16.0 to 6.5.1.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v5.16.0...v6.5.1)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -28,7 +28,7 @@
   },
   "devDependencies": {
     "babel-plugin-styled-components": "^1.10.0",
-    "eslint": "^5.16.0",
+    "eslint": "^6.5.1",
     "eslint-config-prettier": "^4.1.0",
     "eslint-plugin-prettier": "^3.1.1",
     "prettier": "^1.16.4"