Update gc_ruboconfig requirement from ~> 3.0.1 to ~> 3.1.0
Update gc_ruboconfig requirement from ~> 3.0.1 to ~> 3.1.0

Updates the requirements on [gc_ruboconfig](https://github.com/gocardless/ruboconfig) to permit the latest version.
- [Release notes](https://github.com/gocardless/ruboconfig/releases)
- [Changelog](https://github.com/gocardless/gc_ruboconfig/blob/master/CHANGELOG.md)
- [Commits](https://github.com/gocardless/ruboconfig/compare/v3.0.1...v3.1.0)

---
updated-dependencies:
- dependency-name: gc_ruboconfig
  dependency-type: direct:production
...

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