fix(config_reader): add utf-8 encoding when reading config file

Specify utf-8 encoding when opening the configuration file to ensure
compatibility with files containing non-ASCII characters, avoiding potentialencoding errors.

magic_pdf/libs/config_reader.py

@@ -22,7 +22,7 @@ def read_config():
     if not os.path.exists(config_file):
         raise FileNotFoundError(f"{config_file} not found")
 
-    with open(config_file, "r") as f:
+    with open(config_file, "r", encoding="utf-8") as f:
         config = json.load(f)
     return config