[Security] Bump symfony/symfony from 3.4.23 to 3.4.27
[Security] Bump symfony/symfony from 3.4.23 to 3.4.27

Bumps [symfony/symfony](https://github.com/symfony/symfony) from 3.4.23 to 3.4.27. **This update includes security fixes.**
- [Release notes](https://github.com/symfony/symfony/releases)
- [Changelog](https://github.com/symfony/symfony/blob/v3.4.27/CHANGELOG-3.4.md)
- [Commits](https://github.com/symfony/symfony/compare/v3.4.23...v3.4.27)

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