fixup! Add yaml obs converter

Author: SAKavli

src/ert/observation_converters/summary_to_yaml.py

@@ -76,9 +76,9 @@ def convert_summary_to_yaml(config: str) -> None:
         user_config_contents,
         config,
     )
-    file, obs_config = config_dict.get("OBS_CONFIG", (None, None))
+    obs_file, obs_config = config_dict.get("OBS_CONFIG", (None, None))
 
-    if file is None or config_dict is None:
+    if obs_file is None or config_dict is None:
         raise ErtCliError("No observation configuration found.\nExiting ...")
 
     yaml_exporter = YamlConverter(