Bump qs from 6.15.0 to 6.15.2 #35701

Job	Run time
knip	32s
self-check	57s
browser-integration	1m 55s
coverage	11m 17s
Test Node 14 on ubuntu-latest	11m 55s
package-size	1m 31s
Test Node 24 on ubuntu-latest	8m 48s
format	26s
lint	54s
Test Node 24 on windows-latest	10m 29s
typecheck	45s
smoke	54s
baselines	9m 17s
Test Node lts/* on ubuntu-latest with --no-bundle	10m 39s
Test Node 14 on windows-latest	14m 49s
misc	26s
required	2s
	1h 25m 36s

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