fix(nextjs): Use constant-time comparison in assertTokenSignature#8411

jacekradko wants to merge 3 commits intomainclerk/javascript:mainfrom

jacek/aisec-8-clerknextjs-asserttokensignature-non-constant-time-hmacclerk/javascript:jacek/aisec-8-clerknextjs-asserttokensignature-non-constant-time-hmacCopy head branch name to clipboard