feat: upgrade Next.js 15 and React 19, fix font configuration#9

RafiulM wants to merge 1 commit into

mainCodeGuide-dev/codeguide-starter-fullstack:mainfrom

feature/update-nextjs15-fix-parkinsans-fallback-font-zLpcDdrFCodeGuide-dev/codeguide-starter-fullstack:feature/update-nextjs15-fix-parkinsans-fallback-font-zLpcDdrFCopy head branch name to clipboard