Update dependency sphinx to ~2.1

Thalia Technicie
2019-06-17T13:49:18+02:00

This MR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [sphinx](http://sphinx-doc.org/) | dependencies | minor | `~2.0` -> `~2.1` | --- ### Renovate configuration :date: **Schedule**: "every weekday except on Wednesday,every weekend,before 5pm on Wednesday" (UTC). :vertical_traffic_light: **Automerge**: Disabled by config. Please merge this manually once you are satisfied. :recycle: **Rebasing**: Whenever MR becomes conflicted. :no_bell: **Ignore**: Close this MR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this MR, check this box --- Available now for GitLab: [Renovate Pro](https://renovatebot.com/pro) with real-time webhook handling and priority job queue.