Ruby

Backport test fixes to 4.0.x #8272

Job	Run time
C99_compile (head)	1m 5s
C99_compile (4.0)	59s
test (4.0, test)	2m 35s
test (head, stdlib_test rubocop)	1m 54s
test (3.2, test)	2m 19s
test (head, test)	2m 13s
test (3.4, test)	2m 26s
test (4.0, typecheck_test)	1m 18s
test (4.0, stdlib_test, --enable-frozen-string-literal)	1m 30s
test (asan-release, test)	7m 52s
test (3.3, test)	2m 37s
test (4.0, test, --enable-frozen-string-literal)	2m 29s
test (4.0, rubocop validate test_doc build test_generate_stdlib raap)	2m 21s
test (4.0, stdlib_test)	1m 49s
	33m 27s

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