fix(prisma): small typo

prisma/schema.prisma

@@ -81,7 +81,7 @@ model CustomersArchive {
   customer_id Int
   archived_at DateTime  @default(now())
   user_id     String    @db.Uuid
-  invoice_id  String    @unique
+  invoice_id  Int?    @unique
 
   @@map("customers_archive")
 }