♻️ Avoid unnecessary allocation in `SequenceSet[]` #2367

Job	Run time
ruby-versions / Generate Ruby versions	9s
build (3.2 / windows-latest)	3m 13s
build (3.1 / windows-latest)	3m 31s
build (3.1 / macos-latest)	25s
build (3.2 / macos-latest)	29s
build (3.1 / ubuntu-latest)	40s
build (head / windows-latest)	4m 47s
build (3.3 / windows-latest)	3m 34s
build (3.3 / ubuntu-latest)	56s
build (3.4 / ubuntu-latest)	50s
build (3.3 / macos-latest)	43s
build (3.4 / windows-latest)	3m 33s
build (head / ubuntu-latest)	39s
build (head / macos-latest)	29s
build (3.2 / ubuntu-latest)	42s
build (3.4 / macos-latest)	28s
	25m 8s

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