Bump eslint from 5.16.0 to 6.6.0

Bumps [eslint](https://github.com/eslint/eslint) from 5.16.0 to 6.6.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v5.16.0...v6.6.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

npm-shrinkwrap.json

@@ -121,7 +121,7 @@
 		"coveralls": "^3.0.7",
 		"cross-env": "^6.0.3",
 		"docdash": "^1.1.1",
-		"eslint": "^5.16.0",
+		"eslint": "^6.6.0",
 		"eslint-config-google": "^0.14.0",
 		"eslint-plugin-jsdoc": "^4.8.4",
 		"execa": "^2.1.0",