Upgrade to Symfony 4.4.30

[matks]

Questions	Answers
Branch?	develop
Description?	Upgrade to Symfony from 4.4.25 to 4.4.30
Type?	improvement
Category?	CO
BC breaks?	no
Deprecations?	no
Fixed ticket?
How to test?	CI shines
Possible impacts?	There is nothing impactful in the Changelog so it seems to be fine.

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This change is 

[prestonBot]

Hi, thanks for this contribution!

I found some issues with the Pull Request description:

• Your pull request does not seem to fix any issue, consider creating one (see note below) and linking it by writing Fixes #1234.

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[atomiix]

Thanks @matks