Kindly update to the latest verion of next.js, react and other dependencies

[Chetan-svg]

This is an official ecommerce storefront by vercel and we hope vercel team would continue to maintain it as many businesses depend on it.
No commits have been there since over 7 months.
One of the few areas where next.js really shines is ecommerce and their storefront is stale since past 7 months.

So bad for the reputation of this project and vercel for ecommerce.
And also so many open PRs are remaining.

[thomasbritton]

There is a PR created back in June which does this #1467 but unfortunately the creator (@leerob) has since left Vercel.