Update phan/phan requirement from ^2.4 to ^2.4 || ^3.0

Updates the requirements on [phan/phan](https://github.com/phan/phan) to permit the latest version.
- [Release notes](https://github.com/phan/phan/releases)
- [Changelog](https://github.com/phan/phan/blob/master/NEWS.md)
- [Commits](https://github.com/phan/phan/compare/2.4.0...3.0.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

dependabot-preview[bot] authored GitHub committed

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