Bump eslint from 4.19.1 to 6.8.0

Bumps [eslint](https://github.com/eslint/eslint) from 4.19.1 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@v4.19.1...v6.8.0)

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

Author: dependabot-preview[bot]

package.json

@@ -7,7 +7,7 @@
   "dependencies": {},
   "devDependencies": {
     "chai": "^4.1.2",
-    "eslint": "^4.18.1",
+    "eslint": "^6.8.0",
     "eslint-config-airbnb-base": "^14.0.0",
     "eslint-import-resolver-meteor": "^0.4.0",
     "eslint-plugin-import": "2.20.2"