Bump rollbar from 2.15.5 to 2.20.0 (#1965)
Bump rollbar from 2.15.5 to 2.20.0 (#1965)

Bumps [rollbar](https://github.com/rollbar/rollbar-gem) from 2.15.5 to 2.20.0.
- [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/v2.15.5...v2.20.0)
tablexi/nucore-open,tablexi/nucore-open,tablexi/nucore-open,tablexi/nucore-open