Bump rollbar from 3.1.1 to 3.1.2
Bump rollbar from 3.1.1 to 3.1.2

Bumps [rollbar](https://github.com/rollbar/rollbar-gem) from 3.1.1 to 3.1.2.
- [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/v3.1.1...v3.1.2)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
sue445/app-stat-api,sue445/app-stat-api