Tests

Add support for PHP 8.5 `#[\NoDiscard]` #22165

Job	Run time
Tests (8.2, windows-latest)	1m 8s
Tests (8.5, windows-latest)	1m 4s
Tests (8.2, ubuntu-latest)	24s
Integration tests (ubuntu-latest)	26s
Tests (8.4, windows-latest)	57s
Tests (8.5, ubuntu-latest)	25s
Tests (8.4, ubuntu-latest)	24s
Tests with old PHPUnit (8.0, ubuntu-latest)	40s
Tests (8.3, ubuntu-latest)	26s
Tests with old PHPUnit (7.4, ubuntu-latest)	2m 13s
Tests with old PHPUnit (8.1, ubuntu-latest)	43s
Tests with old PHPUnit (8.0, windows-latest)	1m 33s
Tests with old PHPUnit (8.1, windows-latest)	1m 27s
Tests (8.3, windows-latest)	1m 1s
Tests with old PHPUnit (7.4, windows-latest)	2m 9s
Determine levels tests matrix	20s
Integration tests (windows-latest)	57s
Levels tests	-1s
	16m 16s

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