participation-service 라우팅문제 수정

next.config.js

@@ -24,6 +24,11 @@ const nextConfig = {
         source: '/api/v1/events/:path*',
         destination: 'http://localhost:8080/api/v1/events/:path*',
       },
+      // Participation Service API Proxy (외부 서버)
+      {
+        source: '/api/v1/participations/:path*',
+        destination: 'http://kt-event-marketing-api.20.214.196.128.nip.io/api/v1/participations/:path*',
+      },
     ]
   },
 }