Bump ruby/setup-ruby from 1.213.0 to 1.215.0 #703

Job	Run time
ephemeraljob	10m 39s
astatefulset-storage	24m 35s
advanced-daemonset	9m 14s
astatefulset	22m 3s
podUnavailableBudget	18m 9s
pullimages-containerrecreate	13m 36s
sidecarset	41m 35s
clonesetAndInplace	15m 35s
other	45m 0s
	3h 20m 26s

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