[Security] Bump symfony/phpunit-bridge from 3.2.7 to 3.4.26
[Security] Bump symfony/phpunit-bridge from 3.2.7 to 3.4.26

Bumps [symfony/phpunit-bridge](https://github.com/symfony/phpunit-bridge) from 3.2.7 to 3.4.26. **This update includes security fixes.**
- [Release notes](https://github.com/symfony/phpunit-bridge/releases)
- [Changelog](https://github.com/symfony/phpunit-bridge/blob/master/CHANGELOG.md)
- [Commits](https://github.com/symfony/phpunit-bridge/compare/v3.2.7...v3.4.26)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
Mattia1993/Ticketize,Mattia1993/Ticketize