Change LoggingSettings.MaxLogAge from integer (minutes) to a TimeSpan.

src/Umbraco.Core/Configuration/Models/LoggingSettings.cs

@@ -1,7 +1,9 @@
-namespace Umbraco.Core.Configuration.Models
+using System;
+
+namespace Umbraco.Core.Configuration.Models
 {
     public class LoggingSettings
     {
-        public int MaxLogAge { get; set; } = -1;
+        public TimeSpan MaxLogAge { get; set; } = TimeSpan.FromHours(24);
     }
 }