Bump monolog/monolog from 3.7.0 to 3.8.0 in the composer group

Bumps the composer group with 1 update: [monolog/monolog](https://github.com/Seldaek/monolog).


Updates `monolog/monolog` from 3.7.0 to 3.8.0
- [Release notes](https://github.com/Seldaek/monolog/releases)
- [Changelog](https://github.com/Seldaek/monolog/blob/main/CHANGELOG.md)
- [Commits](Seldaek/monolog@3.7.0...3.8.0)

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

Signed-off-by: dependabot[bot] <[email protected]>