Bump sebastian/phpcpd from 3.0.0 to 3.0.1

Bumps [sebastian/phpcpd](https://github.com/sebastianbergmann/phpcpd) from 3.0.0 to 3.0.1.
- [Release notes](https://github.com/sebastianbergmann/phpcpd/releases)
- [Changelog](https://github.com/sebastianbergmann/phpcpd/blob/master/ChangeLog.md)
- [Commits](sebastianbergmann/phpcpd@3.0.0...3.0.1)

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