Update symfony/proxy-manager-bridge requirement from ^5.0 to ^5.1
Update symfony/proxy-manager-bridge requirement from ^5.0 to ^5.1

Updates the requirements on [symfony/proxy-manager-bridge](https://github.com/symfony/proxy-manager-bridge) to permit the latest version.
- [Release notes](https://github.com/symfony/proxy-manager-bridge/releases)
- [Changelog](https://github.com/symfony/proxy-manager-bridge/blob/master/CHANGELOG.md)
- [Commits](https://github.com/symfony/proxy-manager-bridge/compare/v5.0.0...v5.1.0)

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