Scalameta: upgrade to v4.12.0 #5705

Job	Run time
formatting	21s
test (11, windows-latest)	10m 17s
native-image (macOS-latest, default)	6m 12s
test (11, ubuntu-latest)	8m 37s
native-image (ubuntu-latest, default)	4m 23s
test (21, windows-latest)	9m 36s
test-scala-native (windows-latest)	9m 1s
native-image (ubuntu-latest, musl)	4m 33s
test (21, ubuntu-latest)	7m 34s
test-scala-native (ubuntu-latest)	6m 34s
community-test (11, windows-latest, Scala2)	15m 17s
community-test (11, windows-latest, Scala3)	14m 49s
community-test (11, windows-latest, Spark)	25m 8s
community-test (11, windows-latest, Intellij)	16m 54s
community-test (11, windows-latest, Other)	21m 8s
community-test (11, ubuntu-latest, Scala2)	13m 6s
community-test (11, ubuntu-latest, Scala3)	12m 43s
community-test (11, ubuntu-latest, Spark)	22m 17s
community-test (11, ubuntu-latest, Intellij)	15m 28s
community-test (11, ubuntu-latest, Other)	17m 3s
dockerize	0s
	4h 1m 1s

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