Update phpunit/php-code-coverage requirement from ^4.0 || ^5.0 || ^6.0 to ^4.0 || ^5.0 || ^6.0 || ^7.0 (#46)
Update phpunit/php-code-coverage requirement from ^4.0 || ^5.0 || ^6.0 to ^4.0 || ^5.0 || ^6.0 || ^7.0 (#46)

Updates the requirements on [phpunit/php-code-coverage](https://github.com/sebastianbergmann/php-code-coverage) to permit the latest version.
- [Release notes](https://github.com/sebastianbergmann/php-code-coverage/releases)
- [Changelog](https://github.com/sebastianbergmann/php-code-coverage/blob/master/ChangeLog.md)
- [Commits](https://github.com/sebastianbergmann/php-code-coverage/commits/7.0.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
diablomedia/doctrine1,diablomedia/doctrine1