Update security policy documentation for version 2 #185

Job	Run time
Composer lockfile integrity	11s
Code standards	18s
Tests (Symfony 5.4 & PHP 7.4)	20s
Tests (Symfony 5.4 & PHP 8.0)	26s
Tests (Symfony 6.0 & PHP 8.0)	30s
Tests (Symfony 5.4 & PHP 8.1)	28s
Tests (Symfony 6.0 & PHP 8.1)	21s
Tests (Symfony 6.1 & PHP 8.1)	22s
Tests (Symfony 6.2 & PHP 8.1)	34s
Tests (Symfony 6.3 & PHP 8.1)	21s
Tests (Symfony 6.4 & PHP 8.1)	22s
Tests (Symfony 5.4 & PHP 8.2)	20s
Tests (Symfony 6.0 & PHP 8.2)	19s
Tests (Symfony 6.1 & PHP 8.2)	22s
Tests (Symfony 6.2 & PHP 8.2)	31s
Tests (Symfony 6.3 & PHP 8.2)	29s
Tests (Symfony 6.4 & PHP 8.2)	36s
Tests (Symfony 7.0 & PHP 8.2)	27s
Tests (Symfony 5.4 & PHP 8.3)	19s
Tests (Symfony 6.0 & PHP 8.3)	38s
Tests (Symfony 6.1 & PHP 8.3)	20s
Tests (Symfony 6.2 & PHP 8.3)	24s
Tests (Symfony 6.3 & PHP 8.3)	21s
Tests (Symfony 6.4 & PHP 8.3)	19s
Tests (Symfony 7.0 & PHP 8.3)	20s
Tests (Symfony 5.4 & PHP 8.1)	21s
	10m 19s

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