Update dependency eslint to v6.5.1

Thalia Technicie
2019-10-08T15:19:19+02:00

This MR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [eslint](https://eslint.org) ([source](https://github.com/eslint/eslint)) | devDependencies | minor | [`6.0.1` -> `6.5.1`](https://renovate...

eslint (source) | devDependencies | minor | 6.0.1 -> 6.5.1