fix: Turn off all ensure_ascii of json.dumps (#800)

tests/test_function_parser.py

@@ -1,5 +1,6 @@
 import json
 
+from memgpt.constants import JSON_ENSURE_ASCII
 from memgpt.local_llm.function_parser import patch_function
 import memgpt.system as system
 
@@ -32,7 +33,7 @@ EXAMPLE_FUNCTION_CALL_CORE_MEMORY_APPEND_MISSING = {
         "content": "I'll append to memory.",
         "function_call": {
             "name": "core_memory_append",
-            "arguments": json.dumps({"content": "new_stuff"}),
+            "arguments": json.dumps({"content": "new_stuff"}, ensure_ascii=JSON_ENSURE_ASCII),
         },
     },
 }