Added license management module

app/Http/Controllers/InvoiceController.php

@@ -541,7 +541,7 @@ public function store(Request $request)
         }
     }
 
-    public function update(Request $request, $id)
+    public function update(Request $request, int $id)
     {
         // Validate input data (expecting camelCase)
         $validatedData = $request->validate([