build: update actions/download-artifact digest to d3f86a1 #1727

Job	Run time
list	25s
workflow (modules-builder-tests)	1m 43s
workflow (build-cli)	1m 33s
workflow (build-unit-tests)	2m 22s
workflow (devkit-core-tests-rerun)	1m 27s
workflow (devkit-core-tests)	1m 16s
	8m 46s

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