Update builds to use vercel/next

@@ -2,5 +2,5 @@  "version": 2,  "name": "timelite",  "alias": "timelite.app",  "builds": [{ "src": "package.json", "use": "@now/next" }]  "builds": [{ "src": "package.json", "use": "@vercel/next" }]}