test

Bump step-security/harden-runner from 2.19.4 to 2.20.0 #240

Job	Run time
ruby-versions / Generate Ruby versions	3s
build (3.1 / ubuntu-latest)	10s
build (3.3 / macos-latest)	8s
build (3.4 / ubuntu-latest)	14s
build (4.0 / ubuntu-latest)	13s
build (3.0 / ubuntu-latest)	10s
build (3.2 / macos-latest)	12s
build (head / macos-latest)	15s
build (3.2 / ubuntu-latest)	12s
build (3.0 / macos-latest)	13s
build (4.0 / macos-latest)	18s
build (3.4 / macos-latest)	14s
build (3.3 / ubuntu-latest)	10s
build (head / ubuntu-latest)	12s
build (3.1 / macos-latest)	18s
	3m 2s

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