Fix: enlarge the timeout limits. (#9201)

### What problem does this PR solve?

#9189

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

api/utils/api_utils.py

 
 
 async def is_strong_enough(chat_model, embedding_model):
-    @timeout(30, 2)
+    @timeout(60, 2)
     async def _is_strong_enough():
         nonlocal chat_model, embedding_model
         if embedding_model:

graphrag/general/extractor.py

         self._language = language
         self._entity_types = entity_types or DEFAULT_ENTITY_TYPES
 
-    @timeout(60*3)
+    @timeout(60*5)
     def _chat(self, system, history, gen_conf={}):
         hist = deepcopy(history)
         conf = deepcopy(gen_conf)