fix: prevent stale release data by removing Next.js fetch cache

Replace next: { revalidate: 600 } with cache: 'no-store' on GitHub
API fetches so new releases show up within 5 minutes (in-memory cache
only, no Next.js/Vercel cache layer on top).

landing/src/app/api/releases/route.ts

@@ -2,7 +2,6 @@ import { NextResponse } from 'next/server';
 import { getLatestRelease } from '@/lib/releases';
 
 export const dynamic = 'force-dynamic';
-export const revalidate = 600; // Revalidate every 10 minutes
 
 export async function GET() {
   try {