owncloud/core

Change: Update Symfony components to 3.4.33 and other dependencies

The following Symfony components have been updated to version 3.4.33:
- debug
- console
- event-dispatcher
- process
- routing
- translation

The following other dependencies have been updated:
- psr/log (1.1.1 => 1.1.2)
- guzzlehttp/guzzle (5.3.3 => 5.3.4)
- zendframework/zend-validator (2.12.1 => 2.12.2)
- mikey179/vfsstream (v1.6.7 => v1.6.8)

https://symfony.com/blog/symfony-3-4-33-released
https://github.com/owncloud/core/pull/36358