Update version to 4.0.15-SNAPSHOT #760

Job	Run time
build	5m 6s
checkstyle	3m 29s
copyright	3m 11s
shellcheck	3m 6s
vscode-ext	3m 53s
spotbugs	5m 19s
javadoc	4m 2s
cli/linux-amd64	4m 37s
cli/windows-amd64	5m 57s
tests/cli-linux	5m 14s
cli/darwin-amd64	5m 36s
tests/cli-functional-linux	6m 42s
tests/archetype-linux	4m 51s
tests/linker-linux	4m 50s
tests/others-linux	5m 54s
tests/cli-windows	6m 40s
tests/cli-functional-windows	7m 44s
tests/archetype-windows	5m 48s
tests/linker-windows	5m 22s
tests/others-windows	7m 52s
cli/binaries	7s
tests/results	3s
gate	1s
	1h 45m 24s

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