Add support for `gets(chomp: true)`. #934

Job	Run time
openssl-1.0.2u	2m 39s
openssl-1.1.0l	1m 32s
openssl-1.1.1w	1m 46s
openssl-3.0.12	2m 57s
openssl-3.1.4	2m 49s
openssl-3.2.0	3m 39s
libressl-3.1.5	2m 8s
libressl-3.2.7	2m 16s
libressl-3.3.6	2m 16s
libressl-3.4.3	2m 18s
libressl-3.5.3	2m 26s
libressl-3.6.3	2m 15s
libressl-3.7.3	2m 17s
libressl-3.8.1	2m 15s
openssl-3.0.12 fips	2m 48s
openssl-3.1.4 fips	2m 46s
openssl-3.2.0 fips	3m 27s
openssl-head	3m 28s
openssl-head fips	3m 27s
ruby-versions / Generate Ruby versions	4s
ubuntu-22.04 2.7	57s
ubuntu-22.04 3.0	52s
ubuntu-22.04 3.1	1m 1s
ubuntu-22.04 3.2	59s
ubuntu-22.04 3.3	1m 1s
ubuntu-22.04 head	53s
ubuntu-22.04 truffleruby	1m 34s
ubuntu-22.04 truffleruby-head	1m 30s
ubuntu-20.04 2.7	57s
ubuntu-20.04 3.0	54s
ubuntu-20.04 3.1	58s
ubuntu-20.04 3.2	51s
ubuntu-20.04 3.3	46s
ubuntu-20.04 head	47s
ubuntu-20.04 truffleruby-head	1m 43s
macos-latest 2.7	1m 29s
macos-latest 3.0	57s
macos-latest 3.1	1m 16s
macos-latest 3.2	1m 2s
macos-latest 3.3	1m 3s
macos-latest head	1m 0s
macos-latest truffleruby-head	2m 2s
windows-latest 2.7	5m 8s
windows-latest 3.0	5m 9s
windows-latest 3.1	4m 1s
windows-latest 3.2	4m 54s
windows-latest 3.3	4m 46s
windows-latest ucrt	4m 25s
windows-latest mswin	2m 57s
	1h 45m 25s

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