[Snyk] Upgrade @primer/css from 15.1.0 to 15.2.0#4

KunKaxx wants to merge 1 commit intomainKunKaxx/docs:mainfrom

snyk-upgrade-12f8083c2bc58aba8896ebbde8bced0eKunKaxx/docs:snyk-upgrade-12f8083c2bc58aba8896ebbde8bced0eCopy head branch name to clipboard