Update slim/slim requirement from ^4.5 to ^4.7
Update slim/slim requirement from ^4.5 to ^4.7

Updates the requirements on [slim/slim](https://github.com/slimphp/Slim) to permit the latest version.
- [Release notes](https://github.com/slimphp/Slim/releases)
- [Changelog](https://github.com/slimphp/Slim/blob/4.x/CHANGELOG.md)
- [Commits](https://github.com/slimphp/Slim/compare/4.5.0...4.7.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
slimphp/Twig-View,slimphp/Twig-View