Bump sebastian/comparator from 4.0.5 to 4.0.6

Bumps [sebastian/comparator](/~https://github.com/sebastianbergmann/comparator) from 4.0.5 to 4.0.6.
- [Release notes](/~https://github.com/sebastianbergmann/comparator/releases)
- [Changelog](/~https://github.com/sebastianbergmann/comparator/blob/master/ChangeLog.md)
- [Commits](sebastianbergmann/comparator@4.0.5...4.0.6)

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