test

Bump actions/checkout from 5 to 6 #156

Job	Run time
ruby-versions / Generate Ruby versions	4s
build (3.0 / macos-latest)	10s
build (2.7 / ubuntu-latest)	27s
build (2.7 / macos-latest)	30s
build (2.7 / windows-latest)	1m 9s
build (3.0 / ubuntu-latest)	8s
build (3.1 / windows-latest)	51s
build (3.1 / ubuntu-latest)	9s
build (3.2 / windows-latest)	26s
build (3.1 / macos-latest)	12s
build (3.2 / ubuntu-latest)	11s
build (3.4 / macos-latest)	11s
build (3.3 / windows-latest)	22s
build (3.4 / windows-latest)	25s
build (3.4 / ubuntu-latest)	9s
build (3.0 / windows-latest)	34s
build (mswin / windows-latest)	43s
build (3.2 / macos-latest)	11s
build (head / macos-latest)	12s
build (3.3 / ubuntu-latest)	9s
build (mingw / windows-latest)	26s
build (3.3 / macos-latest)	9s
build (head / ubuntu-latest)	7s
	7m 55s

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