Bump eslint from 6.6.0 to 6.8.0

Bumps [eslint](https://github.com/eslint/eslint) from 6.6.0 to 6.8.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v6.6.0...v6.8.0)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -29,6 +29,6 @@
   },
   "devDependencies": {
     "@zeit/ncc": "^0.21.0",
-    "eslint": "^6.3.0"
+    "eslint": "^6.8.0"
   }
 }