test

Update README.md in versions and branches #1462

Job	Run time
check-misc (head)	7s
steep-check (head)	13s
test-memory (head)	35s
test-ruby (head, master)	5m 56s
test-windows (head)	2m 7s
test-ruby (3.0, master)	5m 54s
ruby-versions / Generate Ruby versions	2s
test-cpp (head, g++)	12s
test (2.5)	29s
test-cpp (head, clang++)	20s
test (2.6)	26s
test (2.7)	26s
test (3.0)	15s
test (3.1)	18s
test (3.2)	13s
test (3.3)	12s
test (head)	12s
	17m 57s

Provide feedback