Fix jlink image warnings #869

Job	Run time
copyright	3m 15s
checkstyle	3m 23s
build	5m 7s
shellcheck	3m 7s
spotbugs	5m 57s
javadoc	4m 13s
vscode-ext	4m 6s
cli/windows-amd64	6m 18s
cli/linux-amd64	5m 29s
cli/darwin-amd64	9m 14s
tests/cli-linux	4m 0s
tests/cli-functional-windows	6m 17s
tests/cli-functional-linux	6m 16s
tests/cli-windows	4m 14s
tests/others-linux	6m 8s
tests/archetype-linux	5m 10s
tests/linker-linux	5m 19s
tests/others-windows	6m 27s
tests/archetype-windows	5m 53s
tests/linker-windows	5m 57s
cli/binaries	9s
tests/results	0s
gate	0s
	1h 45m 59s

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