fix(prisma): use PostgreSQL adapter for Prisma v7 client connection

src/lib/prisma.ts

@@ -1,11 +1,13 @@
 import { PrismaClient } from '@prisma/client'
+import { PrismaPg } from '@prisma/adapter-pg'
+import pg from 'pg'
 
 const globalForPrisma = globalThis as unknown as {
   prisma: PrismaClient | undefined
 }
 
-export const prisma = globalForPrisma.prisma ?? new PrismaClient({
-  datasourceUrl: process.env.DATABASE_URL,
-})
+const adapter = new PrismaPg({ connectionString: process.env.DATABASE_URL })
+
+export const prisma = globalForPrisma.prisma ?? new PrismaClient({ adapter })
 
 if (process.env.NODE_ENV !== 'production') globalForPrisma.prisma = prisma