deps(actions): Bump actions/setup-node from 4.4.0 to 6.4.0 #937

Job	Run time
P1 - AI hallucination guard (Lychee URL validation)	9s
P1 - Zombie dependencies (libyear)	7s
P0 - SPDX header validation (repo policy)	7s
P0 - License compliance (go-licenses)	29s
Summary	3s
	55s

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