Use Symfony Serializer component

[fschmtt]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.33%. Comparing base (957fc28) to head (d7853a5).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #116      +/-   ##
==========================================
+ Coverage   96.04%   99.33%   +3.29%     
==========================================
  Files          34       26       -8     
  Lines         859      756     -103     
==========================================
- Hits          825      751      -74     
+ Misses         34        5      -29     

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