Update monolog/monolog requirement from ~1.8 to ~2.0
Update monolog/monolog requirement from ~1.8 to ~2.0

Updates the requirements on [monolog/monolog](https://github.com/Seldaek/monolog) to permit the latest version.
- [Release notes](https://github.com/Seldaek/monolog/releases)
- [Changelog](https://github.com/Seldaek/monolog/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Seldaek/monolog/compare/1.8.0...2.0.2)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
broadway/broadway-bundle