Test

GH Actions: downgrade actions/[upload|download]-artifact back from 4 to 3 #747

Job	Run time
Build Phar on PHP: 8.0	23s
Coverage: 5.4	4m 37s
Coverage: 7.2 with custom ini settings	1m 23s
Coverage: 8.3	1m 27s
PHP: 5.4	1m 23s
PHP: 5.5	1m 11s
PHP: 5.6	1m 2s
PHP: 7.0	43s
PHP: 7.1	34s
PHP: 7.2	41s
PHP: 7.3	32s
PHP: 7.4	50s
PHP: 8.0	44s
PHP: 8.1	29s
PHP: 8.2	49s
PHP: 8.3	26s
PHP: 8.4	40s
PHP: 5.5 with custom ini settings	30s
PHP: 7.0 with custom ini settings	16s
coveralls-finish	5s
	18m 45s

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