Bump eslint from 3.19.0 to 6.6.0

Bumps [eslint](https://github.com/eslint/eslint) from 3.19.0 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@v3.19.0...v6.6.0)

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

package.json

@@ -29,7 +29,7 @@
   "devDependencies": {
     "yeoman-test": "^1.6.0",
     "yeoman-assert": "^2.2.1",
-    "eslint": "^3.1.1",
+    "eslint": "^6.6.0",
     "eslint-config-xo-space": "^0.15.0",
     "gulp": "^3.9.0",
     "gulp-eslint": "^3.0.1",