Fix StubIAuditEntry.Actor property

Replace AuditEntryActor Actor with IQueryableList<AuditEntryActor> Actor.

Author: jcansdale

Octokit.GraphQL/Model/AuditEntry.cs

@@ -96,7 +96,7 @@ internal StubIAuditEntry(Expression expression) : base(expression)
 
         public string Action { get; }
 
-        public AuditEntryActor Actor => this.CreateProperty(x => x.Actor, Octokit.GraphQL.Model.AuditEntryActor.Create);
+        public IQueryableList<AuditEntryActor> Actor => this.CreateProperty(x => x.Actor);
 
         public string ActorIp { get; }
 
@@ -120,9 +120,6 @@ internal StubIAuditEntry(Expression expression) : base(expression)
 
         public string UserUrl { get; }
 
-        // HACK: This wasn't auto-generated
-        IQueryableList<AuditEntryActor> IAuditEntry.Actor => throw new NotImplementedException();
-
         internal static StubIAuditEntry Create(Expression expression)
         {
             return new StubIAuditEntry(expression);