Bump phpunit/php-token-stream from 3.0.2 to 3.1.0

Bumps [phpunit/php-token-stream](https://github.com/sebastianbergmann/php-token-stream) from 3.0.2 to 3.1.0.
- [Release notes](https://github.com/sebastianbergmann/php-token-stream/releases)
- [Changelog](https://github.com/sebastianbergmann/php-token-stream/blob/master/ChangeLog.md)
- [Commits](https://github.com/sebastianbergmann/php-token-stream/compare/3.0.2...3.1.0

)

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