Tests

Add support for PHP 8.5 `#[\NoDiscard]` #22163

Job	Run time
Integration tests (windows-latest)	1m 5s
Determine levels tests matrix	19s
Tests (8.3, ubuntu-latest)	23s
Integration tests (ubuntu-latest)	19s
Tests (8.5, windows-latest)	1m 15s
Tests (8.2, ubuntu-latest)	21s
Tests (8.4, windows-latest)	1m 7s
Tests (8.3, windows-latest)	1m 14s
Tests with old PHPUnit (8.1, windows-latest)	1m 35s
Tests (8.5, ubuntu-latest)	22s
Tests with old PHPUnit (8.0, windows-latest)	1m 31s
Tests (8.2, windows-latest)	1m 13s
Tests with old PHPUnit (7.4, windows-latest)	4m 24s
Tests with old PHPUnit (7.4, ubuntu-latest)	4m 23s
Tests (8.4, ubuntu-latest)	25s
Tests with old PHPUnit (8.0, ubuntu-latest)	40s
Tests with old PHPUnit (8.1, ubuntu-latest)	42s
Levels tests	0s
	21m 18s

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