Ruby

Bump base64 from 0.2.0 to 0.3.0 in /steep #6936

Job	Run time
C99_compile (3.4)	58s
C99_compile (head)	1m 11s
test (3.1, test)	2m 54s
test (3.2, test)	3m 5s
test (3.3, test)	3m 19s
valgrind	58m 52s
test (3.4, test)	3m 9s
test (head, test)	3m 32s
test (head, stdlib_test rubocop)	3m 7s
test (3.4, stdlib_test)	2m 23s
test (3.4, test, --enable-frozen-string-literal)	3m 23s
test (3.4, stdlib_test, --enable-frozen-string-literal)	2m 22s
test (3.4, rubocop validate test_doc build test_generate_stdlib raap)	2m 43s
test (3.4, typecheck_test)	1m 5s
	1h 32m 3s

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