Tests

Fix PHP 8.5 deprecation notices #103

Job	Run time
Tests (8.4, ubuntu-latest, prefer-stable)	15s
Tests (8.4, macos-latest, prefer-stable)	1m 27s
Tests (8.4, windows-latest, prefer-stable)	1m 23s
Tests (8.4, ubuntu-latest, prefer-lowest)	26s
Tests (8.5, ubuntu-latest, prefer-lowest)	21s
Tests (8.4, windows-latest, prefer-lowest)	1m 34s
Tests (8.5, windows-latest, prefer-lowest)	58s
Tests (8.4, macos-latest, prefer-lowest)	1m 37s
Tests (8.5, ubuntu-latest, prefer-stable)	18s
Tests (8.5, macos-latest, prefer-stable)	3m 7s
Tests (8.5, macos-latest, prefer-lowest)	2m 45s
Tests (8.5, windows-latest, prefer-stable)	52s
	15m 3s

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