Update phpspec/phpspec requirement from ^6.0 to ^7.0
Update phpspec/phpspec requirement from ^6.0 to ^7.0

Updates the requirements on [phpspec/phpspec](https://github.com/phpspec/phpspec) to permit the latest version.
- [Release notes](https://github.com/phpspec/phpspec/releases)
- [Changelog](https://github.com/phpspec/phpspec/blob/main/CHANGES-v7.md)
- [Commits](https://github.com/phpspec/phpspec/compare/6.0.0...7.0.1)

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