Bump rollbar from 2.19.4 to 2.20.0
Bump rollbar from 2.19.4 to 2.20.0

Bumps [rollbar](https://github.com/rollbar/rollbar-gem) from 2.19.4 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/v2.19.4...v2.20.0)
sue445/ccc_privacy_crawler,sue445/ccc_privacy_crawler,sue445/ccc_privacy_crawler