Fix WithOpenApi, v14.0.5, closes #4832

Author: RicoSuter

Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <VersionPrefix>14.0.4</VersionPrefix>
+    <VersionPrefix>14.0.5</VersionPrefix>
 
     <Authors>Rico Suter</Authors>
     <Copyright>Copyright © Rico Suter, 2023</Copyright>

src/NSwag.Generation.AspNetCore/AspNetCoreOpenApiDocumentGenerator.cs

@@ -250,7 +250,8 @@ private List<Type> GenerateApiGroups(
                                 .Invoke(openApiOperationMetadata, [openApiJsonWriter]);
 
                             operation = JsonConvert.DeserializeObject<OpenApiOperation>(stringBuilder.ToString());
-                        }
+                            operation.Parameters.Clear(); // clear because parameters are added by the generator
+                       }
 #endif
 
                         operation.IsDeprecated = IsOperationDeprecated(item.Item1, apiDescription.ActionDescriptor, method);