Bump symfony/symfony from 3.4.29 to 3.4.30
Bump symfony/symfony from 3.4.29 to 3.4.30

Bumps [symfony/symfony](https://github.com/symfony/symfony) from 3.4.29 to 3.4.30.
- [Release notes](https://github.com/symfony/symfony/releases)
- [Changelog](https://github.com/symfony/symfony/blob/v3.4.30/CHANGELOG-3.4.md)
- [Commits](https://github.com/symfony/symfony/compare/v3.4.29...v3.4.30)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
sumocoders/forkcms,Katrienvh/forkcms,carakas/forkcms,carakas/forkcms,carakas/forkcms,jacob-v-dam/forkcms,bartdc/forkcms,Katrienvh/forkcms,jonasdekeukelaere/forkcms,sumocoders/forkcms,jessedobbelaere/forkcms,jacob-v-dam/forkcms,forkcms/forkcms,bartdc/forkcms,justcarakas/forkcms,jacob-v-dam/forkcms,forkcms/forkcms,Katrienvh/forkcms,carakas/forkcms,forkcms/forkcms,jonasdekeukelaere/forkcms,jonasdekeukelaere/forkcms,sumocoders/forkcms,jessedobbelaere/forkcms,sumocoders/forkcms,carakas/forkcms,jonasdekeukelaere/forkcms,forkcms/forkcms,jessedobbelaere/forkcms,jessedobbelaere/forkcms,jacob-v-dam/forkcms,jonasdekeukelaere/forkcms,justcarakas/forkcms,sumocoders/forkcms,bartdc/forkcms,Katrienvh/forkcms,justcarakas/forkcms