update logger.warn (deprecated) to logger.warning (#205)

Signed-off-by: Dirk Thomas <dirk-thomas@users.noreply.github.com>

Author: dirk-thomas

ros2cli/ros2cli/entry_points.py

@@ -84,7 +84,7 @@ def load_entry_points(group_name):
         try:
             extension_type = entry_point.load()
         except Exception as e:  # noqa: F841
-            logger.warn(
+            logger.warning(
                 "Failed to load entry point '{entry_point.name}': {e}"
                 .format_map(locals()))
             continue

ros2cli/ros2cli/plugin_system.py

@@ -61,7 +61,7 @@ def _instantiate_extension(
     try:
         extension_instance = extension_class()
     except PluginException as e:  # noqa: F841
-        logger.warn(
+        logger.warning(
             "Failed to instantiate '{group_name}' extension "
             "'{extension_name}': {e}".format_map(locals()))
         return None