Add support for `gets(chomp: true)`. #920

Job	Run time
openssl-1.0.2u	2m 23s
openssl-1.1.0l	1m 28s
openssl-1.1.1w	1m 40s
openssl-3.0.12	3m 4s
ruby-versions / Generate Ruby versions	3s
openssl-3.1.4	3m 2s
openssl-3.2.0	3m 28s
libressl-3.1.5	2m 14s
libressl-3.2.7	2m 11s
libressl-3.3.6	2m 13s
libressl-3.4.3	2m 21s
libressl-3.5.3	2m 13s
libressl-3.6.3	2m 18s
libressl-3.7.3	2m 26s
libressl-3.8.1	2m 24s
openssl-3.0.12 fips	2m 42s
openssl-3.1.4 fips	2m 57s
openssl-3.2.0 fips	3m 28s
openssl-head	3m 17s
openssl-head fips	3m 14s
ubuntu-22.04 2.7	58s
ubuntu-22.04 3.0	51s
ubuntu-22.04 3.1	55s
ubuntu-22.04 3.2	55s
ubuntu-22.04 3.3	58s
ubuntu-22.04 head	57s
ubuntu-22.04 truffleruby	1m 33s
ubuntu-22.04 truffleruby-head	1m 36s
ubuntu-20.04 2.7	54s
ubuntu-20.04 3.0	51s
ubuntu-20.04 3.1	53s
ubuntu-20.04 3.2	49s
ubuntu-20.04 3.3	49s
ubuntu-20.04 head	50s
ubuntu-20.04 truffleruby-head	1m 25s
macos-latest 2.7	1m 20s
macos-latest 3.0	54s
macos-latest 3.1	1m 29s
macos-latest 3.2	1m 32s
macos-latest 3.3	59s
macos-latest head	1m 21s
macos-latest truffleruby-head	1m 35s
windows-latest 2.7	4m 8s
windows-latest 3.0	3m 48s
windows-latest 3.1	3m 53s
windows-latest 3.2	4m 59s
windows-latest 3.3	5m 2s
windows-latest ucrt	3m 52s
windows-latest mswin	2m 13s
	1h 41m 25s

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