changelog/10.3.2_2019-12-04/36405 from owncloud/core

changelog/10.3.2_2019-12-04/36405

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Change: Update Symfony components to 3.4.34

The following Symfony components have been updated to version 3.4.34:
- console
- event-dispatcher
- process
- translation
- routing

https://symfony.com/blog/symfony-3-4-34-released
https://github.com/owncloud/core/pull/36405
https://github.com/owncloud/core/pull/36406
https://github.com/owncloud/core/pull/36407
https://github.com/owncloud/core/pull/36408
https://github.com/owncloud/core/pull/36409