Use of yaml.SafeLoader instead of yaml.Loader

Change-Id: I11a4775ac657275d14b3d7a76abbefdca5d556f4
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/n2vc/utils.py b/n2vc/utils.py
index 286f0fc..a4a6a23 100644
--- a/n2vc/utils.py
+++ b/n2vc/utils.py
@@ -149,7 +149,7 @@
     # convert obj to yaml
     yaml_text = obj_to_yaml(obj)
     # parse to dict
-    return yaml.load(yaml_text, Loader=yaml.Loader)
+    return yaml.load(yaml_text, Loader=yaml.SafeLoader)
 
 
 def get_ee_id_components(ee_id: str) -> Tuple[str, str, str]: