fix: update for tests

Signed-off-by: Samantha Coyle <sam@diagrid.io>

Author: sicoyle

ext/dapr-ext-workflow/dapr/ext/workflow/logger/logger.py

@@ -13,7 +13,8 @@ def __init__(self, name: str, options: Union[LoggerOptions, None] = None):
         log_handler.setLevel(options.log_level)
         log_handler.setFormatter(options.log_formatter)
         logger = logging.getLogger(name)
-        logger.handlers.append(log_handler)
+        if not logger.handlers:
+            logger.addHandler(log_handler)
         self._logger_options = options
         self._logger = logger