Bump vine from 1.1.3 to 1.1.4 in /backend/uclapi
Bump vine from 1.1.3 to 1.1.4 in /backend/uclapi

Bumps [vine](https://github.com/celery/vine) from 1.1.3 to 1.1.4.
- [Changelog](https://github.com/celery/vine/blob/master/Changelog)
- [Commits](https://github.com/celery/vine/compare/v1.1.3...v1.1.4)
uclapi/uclapi,uclapi/uclapi,uclapi/uclapi,uclapi/uclapi