Bump mock from 2.0.0 to 3.0.5 in /backend/uclapi
Bump mock from 2.0.0 to 3.0.5 in /backend/uclapi

Bumps [mock](https://github.com/testing-cabal/mock) from 2.0.0 to 3.0.5.
- [Release notes](https://github.com/testing-cabal/mock/releases)
- [Changelog](https://github.com/testing-cabal/mock/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/testing-cabal/mock/compare/2.0.0...3.0.5)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
uclapi/uclapi,uclapi/uclapi,uclapi/uclapi,uclapi/uclapi