[6.x] Add Symfony 7 support #709

Job	Run time
Lint XMLs (8.1)	25s
Code Coverage (ubuntu-latest, 8.1, highest)	2m 27s
Lint composer.json (8.1)	25s
Coding Standards (8.1)	22s
Static Analysis (8.1)	34s
Tests (ubuntu-latest, 7.3, lowest)	1m 0s
Tests (ubuntu-latest, 7.3, highest)	51s
Tests (ubuntu-latest, 7.4, lowest)	43s
Tests (ubuntu-latest, 7.4, highest)	46s
Tests (ubuntu-latest, 8.0, lowest)	51s
Tests (ubuntu-latest, 8.0, highest)	37s
Tests (ubuntu-latest, 8.1, lowest)	37s
Tests (ubuntu-latest, 8.1, highest)	44s
Tests (ubuntu-latest, 8.2, lowest)	45s
Tests (ubuntu-latest, 8.2, highest)	41s
Tests (windows-latest, 7.3, lowest)	1m 29s
Tests (windows-latest, 7.3, highest)	1m 27s
Tests (windows-latest, 7.4, lowest)	1m 24s
Tests (windows-latest, 7.4, highest)	1m 29s
Tests (windows-latest, 8.0, lowest)	1m 32s
Tests (windows-latest, 8.0, highest)	1m 40s
Tests (windows-latest, 8.1, lowest)	1m 29s
Tests (windows-latest, 8.1, highest)	1m 38s
Tests (windows-latest, 8.2, lowest)	1m 38s
Tests (windows-latest, 8.2, highest)	1m 31s
	27m 5s

Provide feedback