Add pre-firewall request body validation #188

Job	Run time
Composer lockfile integrity	9s
Code standards	18s
Tests (Symfony 5.4 & PHP 7.4)	29s
Tests (Symfony 5.4 & PHP 8.0)	20s
Tests (Symfony 6.0 & PHP 8.0)	20s
Tests (Symfony 5.4 & PHP 8.1)	24s
Tests (Symfony 6.0 & PHP 8.1)	23s
Tests (Symfony 6.1 & PHP 8.1)	19s
Tests (Symfony 6.2 & PHP 8.1)	29s
Tests (Symfony 6.3 & PHP 8.1)	20s
Tests (Symfony 6.4 & PHP 8.1)	21s
Tests (Symfony 5.4 & PHP 8.2)	19s
Tests (Symfony 6.0 & PHP 8.2)	31s
Tests (Symfony 6.1 & PHP 8.2)	29s
Tests (Symfony 6.2 & PHP 8.2)	29s
Tests (Symfony 6.3 & PHP 8.2)	29s
Tests (Symfony 6.4 & PHP 8.2)	29s
Tests (Symfony 7.0 & PHP 8.2)	20s
Tests (Symfony 5.4 & PHP 8.3)	20s
Tests (Symfony 6.0 & PHP 8.3)	21s
Tests (Symfony 6.1 & PHP 8.3)	18s
Tests (Symfony 6.2 & PHP 8.3)	28s
Tests (Symfony 6.3 & PHP 8.3)	27s
Tests (Symfony 6.4 & PHP 8.3)	17s
Tests (Symfony 7.0 & PHP 8.3)	29s
Tests (Symfony 5.4 & PHP 8.1)	30s
	10m 8s

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