Update monolog/monolog requirement from ^1.0.0 to ^1.0.0 || ^2.0.0 (#419)
Update monolog/monolog requirement from ^1.0.0 to ^1.0.0 || ^2.0.0 (#419)

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/2.5.0/CHANGELOG.md)
- [Commits](https://github.com/Seldaek/monolog/compare/1.0.0...2.5.0)

---
updated-dependencies:
- dependency-name: monolog/monolog
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
Jasig/phpCAS