refactor: await `silentNpm` #1604

Job	Run time
list	30s
workflow (build-unit-tests)	2m 8s
workflow (modules-builder-tests)	1m 41s
workflow (build-cli)	1m 34s
workflow (devkit-core-tests-rerun)	1m 18s
workflow (devkit-core-tests)	1m 21s
	8m 32s

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