fix(api): update parameter handling in GTM route to support promise resolution

- Changed the parameter type in the GET function to a promise, ensuring proper resolution of the `id` before use.
- Improved error handling by awaiting the parameters, enhancing the robustness of the API route.

app/api/gtm/[id]/route.ts

@@ -2,9 +2,9 @@ import { NextRequest, NextResponse } from 'next/server';
 
 export async function GET(
   request: NextRequest,
-  { params }: { params: { id: string } }
+  { params }: { params: Promise<{ id: string }> }
 ) {
-  const { id } = params;
+  const { id } = await params;
   
   try {
     const response = await fetch(