Update Next.js to version 15.4.2 and refactor invoice pages

- Upgrade Next.js and related packages for improved performance and security
- Refactor invoice-related pages to streamline navigation and enhance user experience
- Consolidate invoice editing and viewing functionality into a single page
- Remove deprecated edit page and implement a new view page for invoices
- Update links and routing for consistency across the dashboard

src/components/data/current-open-invoice-card.tsx

@@ -143,7 +143,7 @@ export function CurrentOpenInvoiceCard() {
             </Link>
           </Button>
           <Button asChild variant="brand" size="sm" className="flex-1">
-            <Link href={`/dashboard/invoices/${currentInvoice.id}/edit`}>
+            <Link href={`/dashboard/invoices/${currentInvoice.id}`}>
               <Edit className="mr-2 h-3 w-3" />
               Continue
             </Link>