test

Bump actions/checkout from 5 to 6 #282

Job	Run time
ruby-versions / Generate Ruby versions	5s
build (2.5 / windows-latest)	2m 1s
build (2.6 / ubuntu-latest)	25s
build (2.5 / ubuntu-latest)	24s
build (2.6 / windows-latest)	1m 40s
build (3.0 / macos-latest)	20s
build (2.7 / windows-latest)	1m 38s
build (3.0 / ubuntu-latest)	8s
build (2.7 / ubuntu-latest)	26s
build (3.1 / macos-latest)	14s
build (2.6 / macos-latest)	47s
build (3.0 / windows-latest)	1m 2s
build (2.7 / macos-latest)	43s
build (3.1 / ubuntu-latest)	13s
build (3.2 / macos-latest)	15s
build (3.3 / ubuntu-latest)	13s
build (3.4 / windows-latest)	55s
build (head / macos-latest)	15s
build (3.3 / windows-latest)	1m 16s
build (3.4 / ubuntu-latest)	12s
build (3.2 / ubuntu-latest)	11s
build (head / ubuntu-latest)	11s
build (3.3 / macos-latest)	15s
build (jruby / ubuntu-latest)	49s
build (jruby-head / ubuntu-latest)	51s
build (3.1 / windows-latest)	1m 3s
build (truffleruby / ubuntu-latest)	22s
build (3.2 / windows-latest)	1m 10s
build (truffleruby-head / ubuntu-latest)	26s
build (3.4 / macos-latest)	20s
build (mingw / windows-latest)	53s
build (truffleruby-head / macos-latest)	37s
build (truffleruby / macos-latest)	27s
build (mswin / windows-latest)	1m 8s
	21m 55s

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