Bump rollbar from 2.20.0 to 2.20.1
Bump rollbar from 2.20.0 to 2.20.1

Bumps [rollbar](https://github.com/rollbar/rollbar-gem) from 2.20.0 to 2.20.1.
- [Release notes](https://github.com/rollbar/rollbar-gem/releases)
- [Changelog](https://github.com/rollbar/rollbar-gem/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rollbar/rollbar-gem/compare/v2.20.0...v2.20.1)
rdunlop/unicycling-registration,rdunlop/unicycling-registration,rdunlop/unicycling-registration,rdunlop/unicycling-registration