Bump eslint from 3.19.0 to 6.5.1

Bumps [eslint](https://github.com/eslint/eslint) from 3.19.0 to 6.5.1.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v3.19.0...v6.5.1)

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

Author: dependabot[bot]

package.json

@@ -95,7 +95,7 @@
     "uuid": "^3.0.0"
   },
   "devDependencies": {
-    "eslint": "^3.1.1",
+    "eslint": "^6.5.1",
     "grunt": "~0.4.5",
     "grunt-bower": "^0.21.2",
     "grunt-bower-task": "~0.4.0",