Bump the announced Scala 3 Next RC version to 3.6.3-RC1 #9807

Job	Run time
unit-tests	14m 10s
jvm-tests-2	54m 3s
checks	14m 54s
docs-tests	38m 45s
bloop-memory-footprint	15m 9s
format	39s
generate-linux-arm64-native-launcher	0s
generate-linux-launcher	8m 40s
generate-macos-launcher	9m 26s
generate-macos-m1-launcher	10m 52s
generate-mostly-static-launcher	7m 48s
generate-static-launcher	7m 44s
generate-windows-launcher	17m 34s
jvm-tests-1	1h 8m 10s
jvm-tests-3	1h 5m 33s
jvm-tests-4	53m 53s
jvm-tests-5	52m 55s
reference-doc	2m 10s
test-hypothetical-sbt-export	25s
vc-redist	0s
native-static-tests-2	34m 50s
native-static-tests-1	41m 36s
native-static-tests-3	38m 35s
native-static-tests-4	33m 4s
native-static-tests-5	31m 10s
native-mostly-static-tests-1	39m 37s
native-mostly-static-tests-2	33m 30s
native-mostly-static-tests-3	37m 14s
native-mostly-static-tests-4	30m 50s
native-mostly-static-tests-5	29m 36s
native-linux-tests-4	24m 9s
native-linux-tests-3	30m 39s
native-linux-tests-1	31m 6s
native-linux-tests-2	26m 17s
native-linux-tests-5	23m 27s
native-macos-tests-2	1h 2m 14s
native-macos-tests-3	1h 3m 30s
native-macos-tests-4	51m 57s
native-macos-tests-5	52m 5s
native-macos-tests-1	1h 19m 28s
native-macos-m1-tests-2	34m 38s
native-macos-m1-tests-1	38m 47s
native-macos-m1-tests-3	45m 28s
native-macos-m1-tests-4	31m 24s
native-macos-m1-tests-5	33m 54s
native-windows-tests-4	31m 29s
native-windows-tests-3	38m 48s
native-windows-tests-2	36m 8s
native-windows-tests-1	39m 39s
native-windows-tests-5	33m 53s
publish	0s
launchers	0s
Update packages	0s
Update Windows packages	0s
	1d 2h 41m 52s

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