Make this test work on Windows #1316

Job	Run time
Coding Guidelines	49s
Dependency Validation	13s
Unit Tests (ubuntu-latest, 8.1)	20s
Type Checker	27s
Unit Tests (ubuntu-latest, 8.2)	14s
Unit Tests (ubuntu-latest, 8.3)	12s
Unit Tests (ubuntu-latest, 8.4)	13s
Unit Tests (windows-latest, 8.1)	36s
Unit Tests (windows-latest, 8.2)	35s
Unit Tests (windows-latest, 8.3)	30s
Unit Tests (windows-latest, 8.4)	29s
End-to-End Tests (ubuntu-latest, 8.1)	42s
End-to-End Tests (ubuntu-latest, 8.2)	42s
End-to-End Tests (ubuntu-latest, 8.3)	39s
End-to-End Tests (ubuntu-latest, 8.4)	40s
End-to-End Tests (windows-latest, 8.1)	1m 34s
End-to-End Tests (windows-latest, 8.2)	1m 30s
End-to-End Tests (windows-latest, 8.3)	1m 33s
End-to-End Tests (windows-latest, 8.4)	1m 33s
Code Coverage	1m 15s
Build PHAR	32s
Test PHAR (8.1, pcov)	22s
Test PHAR (8.1, xdebug)	32s
Test PHAR (8.2, pcov)	23s
Test PHAR (8.2, xdebug)	40s
Test PHAR (8.3, pcov)	23s
Test PHAR (8.3, xdebug)	36s
Test PHAR (8.4, pcov)	21s
Test PHAR (8.4, xdebug)	32s
	19m 7s

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