Merge pull request #1364 from pocke/Drop_support_of_Ruby_2_x #3176

Job	Run time
windows (windows-2019, ucrt)	1m 35s
windows (windows-2019, mswin)	1m 37s
windows (windows-2022, ucrt)	1m 34s
windows (windows-2022, mswin)	2m 1s
test (master-nightly-focal, test)	2m 12s
test (master-nightly-focal, stdlib_test)	2m 33s
test (master-nightly-focal, rubocop validate test_doc build test_generate_stdlib)	3m 2s
test (master-nightly-focal, lexer confirm_lexer)	4m 9s
test (master-nightly-focal, lexer compile)	4m 7s
test (3.2-dev-focal, test)	2m 11s
test (3.2-dev-focal, stdlib_test)	2m 30s
test (3.2-dev-focal, rubocop validate test_doc build test_generate_stdlib)	2m 24s
test (3.2-dev-focal, lexer confirm_lexer)	4m 10s
test (3.2-dev-focal, lexer compile)	4m 5s
test (3.1-dev-focal, test)	2m 24s
test (3.1-dev-focal, rubocop validate test_doc build test_generate_stdlib)	2m 27s
test (3.1-dev-focal, lexer confirm_lexer)	4m 12s
test (3.1-dev-focal, lexer compile)	4m 11s
test (3.0-dev-focal, test)	2m 23s
test (3.0-dev-focal, rubocop validate test_doc build test_generate_stdlib)	2m 25s
test (3.0-dev-focal, lexer confirm_lexer)	4m 9s
test (3.0-dev-focal, lexer compile)	4m 9s
	1h 4m 30s

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