Improve handling for parallel Scala CLI runs #10032

Job	Run time
jvm-tests-3	1h 11m 23s
jvm-tests-2	58m 34s
generate-macos-launcher	11m 11s
generate-linux-launcher	8m 56s
generate-macos-m1-launcher	21m 4s
jvm-tests-1	1h 12m 45s
jvm-tests-4	59m 27s
jvm-tests-5	1h 1m 46s
unit-tests	14m 46s
bloop-memory-footprint	15m 31s
checks	18m 7s
docs-tests	39m 19s
format	40s
generate-linux-arm64-native-launcher	0s
generate-mostly-static-launcher	7m 56s
generate-static-launcher	8m 5s
generate-windows-launcher	13m 19s
reference-doc	2m 22s
test-hypothetical-sbt-export	29s
vc-redist	0s
native-mostly-static-tests-4	33m 47s
native-mostly-static-tests-3	40m 12s
native-mostly-static-tests-1	39m 58s
native-mostly-static-tests-2	37m 4s
native-mostly-static-tests-5	35m 37s
native-static-tests-4	36m 49s
native-static-tests-2	38m 39s
native-static-tests-1	42m 58s
native-static-tests-5	33m 42s
native-static-tests-3	40m 19s
native-linux-tests-4	27m 55s
native-linux-tests-3	34m 4s
native-linux-tests-2	30m 39s
native-linux-tests-1	34m 8s
native-linux-tests-5	28m 0s
native-windows-tests-3	42m 35s
native-windows-tests-2	37m 55s
native-windows-tests-4	34m 6s
native-windows-tests-1	38m 42s
native-windows-tests-5	35m 8s
native-macos-tests-1	1h 28m 53s
native-macos-tests-2	1h 1m 42s
native-macos-tests-3	1h 1m 30s
native-macos-tests-4	1h 4m 24s
native-macos-tests-5	59m 20s
native-macos-m1-tests-1	47m 7s
native-macos-m1-tests-2	34m 44s
native-macos-m1-tests-4	32m 59s
native-macos-m1-tests-3	49m 11s
native-macos-m1-tests-5	38m 22s
publish	0s
launchers	0s
Update packages	0s
Update Windows packages	0s
	1d 5h 6m 9s

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