Merge remote-tracking branch 'origin/v13/dev' into v14/dev

# Conflicts:
#	src/Umbraco.Core/DependencyInjection/UmbracoBuilder.cs
#	src/Umbraco.Infrastructure/DependencyInjection/UmbracoBuilder.Repositories.cs
#	src/Umbraco.Infrastructure/Migrations/Upgrade/UmbracoPlan.cs
#	src/Umbraco.Infrastructure/PropertyEditors/MultiUrlPickerValueEditor.cs

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

@@ -7,6 +7,7 @@ public class WebhookSettings
 {
     private const bool StaticEnabled = true;
     private const int StaticMaximumRetries = 5;
+    internal const string StaticPeriod = "00:00:10";
 
     /// <summary>
     ///     Gets or sets a value indicating whether webhooks are enabled.
@@ -31,4 +32,10 @@ public class WebhookSettings
     /// </remarks>
     [DefaultValue(StaticMaximumRetries)]
     public int MaximumRetries { get; set; } = StaticMaximumRetries;
+
+    /// <summary>
+    ///     Gets or sets a value for the period of the webhook firing.
+    /// </summary>
+    [DefaultValue(StaticPeriod)]
+    public TimeSpan Period { get; set; } = TimeSpan.Parse(StaticPeriod);
 }