fix: timeout시간 변경

Author: sokft

src/main/java/Capstone/FOSSistant/global/service/customAI/IssueListServiceImpl.java

@@ -216,7 +216,7 @@ public CompletableFuture<DifficultyResult> classifyWithAI(String title, String b
         long start = System.currentTimeMillis();
 
         return aiClassifierClient.classify(title, body)
-                .timeout(Duration.ofSeconds(30))
+                .timeout(Duration.ofSeconds(50))
                 .onErrorResume(TimeoutException.class, e -> {
                     log.error("[NETWORK] AI 호출 타임아웃: {}ms — {}", System.currentTimeMillis()-start, title, e);
                     return aiClassifierClient.defaultSingleResult();