Bump actions/upload-artifact from 4 to 7 (#880) #4004

Job	Run time
scala-ci (ubuntu_latest, ubuntu-latest, 11, true, false, 22.04.5)	16m 23s
scala-ci (macos_latest, macos-latest, 17, true, true, latest)	5m 46s
scala-ci (macos_latest, macos-latest, 11, true, false, 22.04.5)	6m 53s
scala-ci (ubuntu_latest, ubuntu-latest, 21, true, false, latest-edge)	18m 5s
scala-ci (macos_latest, macos-latest, 21, true, false, latest-edge)	7m 49s
scala-ci (ubuntu_latest, ubuntu-latest, 17, true, true, latest)	17m 9s
	1h 12m 5s

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