Expose `IO#timeout` and `IO#timeout=` if available #889

Job	Run time
openssl-1.0.2u	2m 26s
openssl-1.1.0l	2m 8s
openssl-1.1.1w	2m 59s
openssl-3.0.12	4m 3s
openssl-3.1.4	2m 52s
libressl-3.1.5	2m 7s
libressl-3.2.7	3m 13s
libressl-3.3.6	2m 16s
libressl-3.4.3	2m 15s
libressl-3.5.3	2m 16s
libressl-3.6.3	2m 44s
libressl-3.7.3	4m 14s
libressl-3.8.1	2m 12s
openssl-3.0.12 fips	2m 44s
openssl-3.1.4 fips	2m 51s
openssl-head	3m 30s
openssl-head fips	3m 39s
ruby-versions / Generate Ruby versions	3s
ubuntu-22.04 2.7	1m 15s
ubuntu-22.04 3.0	52s
ubuntu-22.04 3.1	1m 1s
ubuntu-22.04 3.2	1m 0s
ubuntu-22.04 head	58s
ubuntu-22.04 truffleruby	1m 34s
ubuntu-22.04 truffleruby-head	2m 36s
ubuntu-20.04 2.7	55s
ubuntu-20.04 3.0	53s
ubuntu-20.04 3.1	1m 19s
ubuntu-20.04 3.2	1m 24s
ubuntu-20.04 head	46s
ubuntu-20.04 truffleruby-head	1m 53s
macos-latest 2.7	1m 46s
macos-latest 3.0	1m 5s
macos-latest 3.1	1m 36s
macos-latest 3.2	1m 17s
macos-latest head	1m 9s
macos-latest truffleruby-head	3m 2s
windows-latest 2.7	8m 21s
windows-latest 3.0	4m 57s
windows-latest 3.1	6m 15s
windows-latest 3.2	7m 25s
windows-latest ucrt	5m 45s
windows-latest mswin	3m 52s
	1h 51m 28s

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