Backport #1402 (fix-lockfile-generator) #3261

Job	Run time
windows (windows-2019, ucrt)	1m 2s
windows (windows-2019, mswin)	1m 35s
windows (windows-2022, ucrt)	1m 38s
windows (windows-2022, mswin)	3m 24s
test (master-nightly-focal, test)	2m 21s
test (master-nightly-focal, stdlib_test)	2m 41s
test (master-nightly-focal, rubocop validate test_doc build test_generate_stdlib)	2m 15s
test (master-nightly-focal, lexer confirm_lexer)	3m 56s
test (master-nightly-focal, lexer compile)	5m 33s
test (3.2-dev-focal, test)	2m 40s
test (3.2-dev-focal, stdlib_test)	2m 31s
test (3.2-dev-focal, rubocop validate test_doc build test_generate_stdlib)	2m 25s
test (3.2-dev-focal, lexer confirm_lexer)	3m 38s
test (3.2-dev-focal, lexer compile)	3m 54s
test (3.1-dev-focal, test)	2m 18s
test (3.1-dev-focal, rubocop validate test_doc build test_generate_stdlib)	3m 21s
test (3.1-dev-focal, lexer confirm_lexer)	4m 53s
test (3.1-dev-focal, lexer compile)	4m 50s
test (3.0-dev-focal, test)	2m 39s
test (3.0-dev-focal, rubocop validate test_doc build test_generate_stdlib)	2m 19s
test (3.0-dev-focal, lexer confirm_lexer)	4m 6s
test (3.0-dev-focal, lexer compile)	4m 8s
test (2.7-dev-bionic, test)	2m 10s
test (2.7-dev-bionic, rubocop validate test_doc build test_generate_stdlib)	2m 23s
test (2.7-dev-bionic, lexer confirm_lexer)	3m 33s
test (2.7-dev-bionic, lexer compile)	4m 32s
test (2.6-bionic, test)	1m 37s
test (2.6-bionic, rubocop validate test_doc build test_generate_stdlib)	2m 38s
test (2.6-bionic, lexer confirm_lexer)	3m 12s
test (2.6-bionic, lexer compile)	3m 57s
	1h 32m 9s

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