Bump actions/upload-artifact from 4 to 5 #518

Job	Run time
ruby-versions / Generate Ruby versions	12s
ubuntu-24.04 3.0	17s
ubuntu-24.04 3.1	17s
ubuntu-24.04 3.4	17s
ubuntu-24.04 head	17s
ubuntu-24.04 2.7	45s
ubuntu-24.04 3.3	19s
ubuntu-24.04 3.2	27s
ubuntu-24.04 jruby-head	1m 9s
ubuntu-24.04 debug	27s
ubuntu-22.04 3.1	19s
ubuntu-22.04 2.7	45s
ubuntu-22.04 3.4	22s
ubuntu-22.04 jruby-head	59s
ubuntu-24.04 truffleruby-head	25s
ubuntu-22.04 head	18s
ubuntu-22.04 truffleruby-head	28s
ubuntu-22.04 3.3	21s
ubuntu-22.04 3.2	1m 7s
ubuntu-22.04 debug	24s
ubuntu-22.04 3.0	13s
	10m 8s

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