feat: allow symfony ^6.4 #7

Job	Run time
QA (lint + static analysis)	33s
Run codeception tests (8.5, highest, pcov, false, true)	26s
Run codeception tests (8.4, highest, pcov, false, true)	39s
Run codeception tests (8.3, locked, pcov, true, false)	34s
Release	21s
	2m 33s

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