migrate to prisma accelerate

https://prismaio.notion.site/Migration-Guide-For-Data-Proxy-Users-Moving-to-Prisma-Accelerate-5df9

lib/helpers/prisma.ts

@@ -1,11 +1,12 @@
 import { PrismaClient } from "@prisma/client/edge";
+import { withAccelerate } from "@prisma/extension-accelerate";
 
 // creating PrismaClient here prevents next.js from starting too many concurrent prisma instances and exhausting the
 // number of connection pools available (especially when hot reloading from `next dev`).
 // https://www.prisma.io/docs/guides/other/troubleshooting-orm/help-articles/nextjs-prisma-client-dev-practices
 
 const prismaClientSingleton = () => {
-  return new PrismaClient();
+  return new PrismaClient().$extends(withAccelerate());
 };
 
 type PrismaClientSingleton = ReturnType<typeof prismaClientSingleton>;