Bump eslint from 5.5.0 to 5.6.0

Bumps [eslint](https://github.com/eslint/eslint) from 5.5.0 to 5.6.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v5.5.0...v5.6.0)

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

yarn.lock

@@ -1471,8 +1471,8 @@ eslint-visitor-keys@^1.0.0:
   resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#3f3180fb2e291017716acb4c9d6d5b5c34a6a81d"
 
 eslint@^5.0.0:
-  version "5.5.0"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-5.5.0.tgz#8557fcceab5141a8197da9ffd9904f89f64425c6"
+  version "5.6.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-5.6.0.tgz#b6f7806041af01f71b3f1895cbb20971ea4b6223"
   dependencies:
     "@babel/code-frame" "^7.0.0"
     ajv "^6.5.3"