fix(agent): Fix "ChatModelResponse not subscriptable" errors in summarize_text and QueryLanguageModel ability

- `summarize_text` and `QueryLanguageModel.__call__` still tried to access `response["content"]`, which isn't possible since upgrading to the OpenAI v1 client library.

autogpts/autogpt/autogpt/core/ability/builtins/query_language_model.py

@@ -62,5 +62,5 @@ class QueryLanguageModel(Ability):
             ability_name=self.name(),
             ability_args={"query": query},
             success=True,
-            message=model_response.response["content"],
+            message=model_response.response.content or "",
         )

autogpts/autogpt/autogpt/processing/text.py

@@ -119,7 +119,7 @@ async def summarize_text(
                 temperature=0,
                 max_tokens=500,
             )
-        ).response["content"]
+        ).response.content
 
         logger.debug(f"\n{'-'*16} SUMMARY {'-'*17}\n{summary}\n{'-'*42}\n")
         return summary.strip(), None