Fix: Added support for reference too

coscine/issues#2880

src/GraphDeployer/Models/ConfigurationModels/GraphDeployerConfiguration.cs

@@ -52,6 +52,6 @@ public class GraphDeployerConfiguration
     {
         public required string Name { get; init; }
         public required Uri Url { get; init; }
-        public string? Branch { get; init; }
+        public string? Ref { get; init; }
     };
 }