Use utf8 in all file read operations

test/resources/repos/python/test_repo/scripts/run_app.py

@@ -44,7 +44,7 @@ def load_config(config_path: str) -> dict[str, Any]:
         return {}
 
     try:
-        with open(config_path) as f:
+        with open(config_path, encoding="utf-8") as f:
             return json.load(f)
     except json.JSONDecodeError:
         logger.error(f"Invalid JSON in configuration file: {config_path}")