Lock file maintenance #1853

Job	Run time
PHPUnit tests (lowest, 8.2, ubuntu-latest)	42s
PHPUnit tests (lowest, 8.2, windows-latest)	1m 12s
PHPUnit tests (lowest, 8.3, ubuntu-latest)	45s
PHPUnit tests (lowest, 8.3, windows-latest)	59s
PHPUnit tests (lowest, 8.4, ubuntu-latest)	54s
PHPUnit tests (lowest, 8.4, windows-latest)	1m 3s
PHPUnit tests (highest, 8.2, ubuntu-latest)	49s
PHPUnit tests (highest, 8.2, windows-latest)	1m 12s
PHPUnit tests (highest, 8.3, ubuntu-latest)	50s
PHPUnit tests (highest, 8.3, windows-latest)	1m 2s
PHPUnit tests (highest, 8.4, ubuntu-latest)	51s
PHPUnit tests (highest, 8.4, windows-latest)	1m 9s
PHPUnit tests (locked, 8.2, ubuntu-latest)	46s
PHPUnit tests (locked, 8.2, windows-latest)	1m 2s
PHPUnit tests (locked, 8.3, ubuntu-latest)	44s
PHPUnit tests (locked, 8.3, windows-latest)	1m 3s
PHPUnit tests (locked, 8.4, ubuntu-latest)	58s
PHPUnit tests (locked, 8.4, windows-latest)	1m 10s
	17m 11s

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