Move from @vercel/postgres to postgres (provider-agnostic) (#989)

* Postgres

* fix

* fix

* prettier-fix

---------

Co-authored-by: Delba de Oliveira <32464864+delbaoliveira@users.noreply.github.com>

dashboard/starter-example/package.json

@@ -8,13 +8,13 @@
   "dependencies": {
     "@heroicons/react": "^2.2.0",
     "@tailwindcss/forms": "^0.5.10",
-    "@vercel/postgres": "^0.10.0",
     "autoprefixer": "10.4.20",
     "bcrypt": "^5.1.1",
     "clsx": "^2.1.1",
     "next": "latest",
     "next-auth": "5.0.0-beta.25",
     "postcss": "8.5.1",
+    "postgres": "^3.4.5",
     "react": "latest",
     "react-dom": "latest",
     "tailwindcss": "3.4.17",