✨ Handle missing security definitions

Signed-off-by: Alexandre Franke <alexandre.franke@matrix.org>

scripts/dump-swagger.py

@@ -153,9 +153,12 @@ output = {
 }
 
 selected_api_dir = os.path.join(api_dir, selected_api)
-with open(os.path.join(selected_api_dir, 'definitions',
+try:
+    with open(os.path.join(selected_api_dir, 'definitions',
                            'security.yaml')) as f:
         output['securityDefinitions'] = yaml.safe_load(f)
+except FileNotFoundError:
+    print("No security definitions available for this API")
 
 for filename in os.listdir(selected_api_dir):
     if not filename.endswith(".yaml"):