Bump actions/setup-go from 4 to 5 #1650

Job	Run time
buildAndPush (ironcore-controller-manager, manager)	1m 58s
buildAndPush (ironcore-apiserver, apiserver)	2m 59s
buildAndPush (ironcore-machinepoollet, machinepoollet)	2m 53s
buildAndPush (ironcore-machinebroker, machinebroker)	3m 31s
buildAndPush (ironcore-irictl-machine, irictl-machine)	2m 0s
buildAndPush (ironcore-volumepoollet, volumepoollet)	2m 8s
buildAndPush (ironcore-volumebroker, volumebroker)	3m 22s
buildAndPush (ironcore-irictl-volume, irictl-volume)	2m 2s
buildAndPush (ironcore-bucketpoollet, bucketpoollet)	2m 10s
buildAndPush (ironcore-bucketbroker, bucketbroker)	3m 25s
buildAndPush (ironcore-irictl-bucket, irictl-bucket)	2m 0s
	28m 28s

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