Bump monolog/monolog from 2.7.0 to 2.8.0 (#220)

Bumps [monolog/monolog](https://github.com/Seldaek/monolog) from 2.7.0 to 2.8.0.
- [Release notes](https://github.com/Seldaek/monolog/releases)
- [Changelog](https://github.com/Seldaek/monolog/blob/main/CHANGELOG.md)
- [Commits](Seldaek/monolog@2.7.0...2.8.0)

---
updated-dependencies:
- dependency-name: monolog/monolog
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]