build(deps-dev): bump eslint from 5.12.0 to 5.12.1

Bumps [eslint](https://github.com/eslint/eslint) from 5.12.0 to 5.12.1.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v5.12.0...v5.12.1)

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

yarn.lock

@@ -241,8 +241,8 @@ eslint-visitor-keys@^1.0.0:
   resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#3f3180fb2e291017716acb4c9d6d5b5c34a6a81d"
 
 eslint@^5.6.0:
-  version "5.12.0"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-5.12.0.tgz#fab3b908f60c52671fb14e996a450b96c743c859"
+  version "5.12.1"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-5.12.1.tgz#5ca9931fb9029d04e7be92b03ce3b58edfac7e3b"
   dependencies:
     "@babel/code-frame" "^7.0.0"
     ajv "^6.5.3"