Prevent request smuggling #200

Job	Run time
ruby-versions / Generate Ruby versions	3s
build (2.4 / ubuntu-latest)	52s
build (2.5 / ubuntu-latest)	24s
build (2.6 / ubuntu-latest)	25s
build (2.6 / macos-latest)	35s
build (2.7 / ubuntu-latest)	26s
build (2.7 / macos-latest)	45s
build (3.0 / ubuntu-latest)	11s
build (3.0 / macos-latest)	15s
build (3.1 / ubuntu-latest)	18s
build (3.1 / macos-latest)	35s
build (3.2 / ubuntu-latest)	13s
build (3.2 / macos-latest)	37s
build (3.3 / ubuntu-latest)	14s
build (3.3 / macos-latest)	14s
build (head / ubuntu-latest)	47s
build (head / macos-latest)	14s
build (2.4 / macos-13)	58s
build (2.5 / macos-13)	52s
	8m 58s

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