[DOC] New file RI.md #671

Job	Run time
ruby-versions / Generate Ruby versions	3s
test (3.1, ubuntu-latest)	16s
test (3.1, macos-latest)	34s
test (3.1, windows-latest)	1m 35s
test (3.2, ubuntu-latest)	19s
test (3.2, macos-latest)	26s
test (3.2, windows-latest)	2m 37s
test (3.3, ubuntu-latest)	19s
test (3.3, macos-latest)	37s
test (3.3, windows-latest)	1m 52s
test (head, ubuntu-latest)	25s
test (head, macos-latest)	29s
test (head, windows-latest)	1m 41s
test (jruby, ubuntu-latest)	1m 15s
test (jruby, macos-latest)	1m 45s
test (jruby-head, ubuntu-latest)	1m 22s
test (jruby-head, macos-latest)	1m 23s
test (truffleruby, ubuntu-latest)	1m 23s
test (truffleruby, macos-latest)	1m 50s
test (truffleruby-head, ubuntu-latest)	1m 49s
test (truffleruby-head, macos-latest)	3m 51s
	25m 51s

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