Closes #6087 #2899

Job	Run time
Dependency Validation	10s
Coding Guidelines	28s
Type Checker	28s
Unit Tests (ubuntu-latest, 8.1)	13s
Unit Tests (ubuntu-latest, 8.2)	14s
Unit Tests (ubuntu-latest, 8.3)	10s
Unit Tests (ubuntu-latest, 8.4)	11s
Unit Tests (ubuntu-latest, 8.5)	14s
Unit Tests (windows-latest, 8.1)	31s
Unit Tests (windows-latest, 8.2)	33s
Unit Tests (windows-latest, 8.3)	40s
Unit Tests (windows-latest, 8.4)	33s
Unit Tests (windows-latest, 8.5)	34s
End-to-End Tests (ubuntu-latest, 8.1)	41s
End-to-End Tests (ubuntu-latest, 8.2)	41s
End-to-End Tests (ubuntu-latest, 8.3)	36s
End-to-End Tests (ubuntu-latest, 8.4)	38s
End-to-End Tests (ubuntu-latest, 8.5)	37s
End-to-End Tests (windows-latest, 8.1)	1m 37s
End-to-End Tests (windows-latest, 8.2)	1m 35s
End-to-End Tests (windows-latest, 8.3)	1m 32s
End-to-End Tests (windows-latest, 8.4)	1m 39s
End-to-End Tests (windows-latest, 8.5)	1m 33s
Build PHAR	41s
Code Coverage	2m 10s
Test PHAR (8.1, pcov)	16s
Test PHAR (8.1, xdebug)	31s
Test PHAR (8.2, pcov)	20s
Test PHAR (8.2, xdebug)	38s
Test PHAR (8.3, pcov)	16s
Test PHAR (8.3, xdebug)	28s
Test PHAR (8.4, pcov)	15s
Test PHAR (8.4, xdebug)	33s
Test PHAR (8.5, pcov)	21s
Test PHAR (8.5, xdebug)	30s
	23m 7s

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