Lock file maintenance #1985

Job	Run time
PHPUnit tests (lowest, 8.2, ubuntu-latest)	41s
PHPUnit tests (lowest, 8.2, windows-latest)	1m 7s
PHPUnit tests (lowest, 8.3, ubuntu-latest)	41s
PHPUnit tests (lowest, 8.3, windows-latest)	1m 9s
PHPUnit tests (lowest, 8.4, ubuntu-latest)	43s
PHPUnit tests (lowest, 8.4, windows-latest)	1m 5s
PHPUnit tests (highest, 8.2, ubuntu-latest)	43s
PHPUnit tests (highest, 8.2, windows-latest)	1m 8s
PHPUnit tests (highest, 8.3, ubuntu-latest)	52s
PHPUnit tests (highest, 8.3, windows-latest)	1m 2s
PHPUnit tests (highest, 8.4, ubuntu-latest)	49s
PHPUnit tests (highest, 8.4, windows-latest)	1m 0s
PHPUnit tests (locked, 8.2, ubuntu-latest)	37s
PHPUnit tests (locked, 8.2, windows-latest)	1m 4s
PHPUnit tests (locked, 8.3, ubuntu-latest)	47s
PHPUnit tests (locked, 8.3, windows-latest)	1m 4s
PHPUnit tests (locked, 8.4, ubuntu-latest)	41s
PHPUnit tests (locked, 8.4, windows-latest)	1m 8s
	16m 21s

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