Test

Bump actions/checkout from 5 to 6 #186

Job	Run time
2.6 on windows-latest	2m 28s
2.7 on ubuntu-latest	34s
2.6 on ubuntu-latest	34s
2.5 on windows-latest	1m 51s
2.6 on macos-latest	51s
2.7 on macos-latest	1m 17s
2.5 on ubuntu-latest	30s
3.2 on ubuntu-latest	24s
truffleruby-head on macos-latest	58s
3.2 on windows-latest	1m 5s
3.1 on ubuntu-latest	17s
head on macos-latest	35s
3.0 on macos-latest	30s
3.1 on macos-latest	26s
3.1 on windows-latest	1m 13s
3.0 on ubuntu-latest	16s
2.7 on windows-latest	2m 1s
3.0 on windows-latest	1m 21s
3.2 on macos-latest	31s
truffleruby-head on ubuntu-latest	59s
head on ubuntu-latest	16s
head on windows-latest	1m 4s
	20m 1s

Provide feedback