Fix breaking changes

src/JsonSchema/AppSettings.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Umbraco.
 // See LICENSE for more details.
 
+using Umbraco.Cms.Core.Configuration;
 using Umbraco.Cms.Core.Configuration.Models;
 using Umbraco.Deploy.Core.Configuration.DeployConfiguration;
 using Umbraco.Deploy.Core.Configuration.DeployProjectConfiguration;

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

@@ -1,6 +1,7 @@
 using System.ComponentModel;
+using Umbraco.Cms.Core.Configuration.Models;
 
-namespace Umbraco.Cms.Core.Configuration.Models
+namespace Umbraco.Cms.Core.Configuration
 {
     /// <summary>
     /// Typed configuration options for content dashboard settings.

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

@@ -85,5 +85,15 @@ namespace Umbraco.Cms.Core.Configuration.Models
         /// Add additional character replacements, or override defaults
         /// </summary>
         public IEnumerable<CharItem> UserDefinedCharCollection { get; set; }
+
+        [Obsolete("Use CharItem in the Umbraco.Cms.Core.Configuration.Models namespace instead.")]
+        public class CharItem : IChar
+        {
+            /// <inheritdoc/>
+            public string Char { get; set; }
+
+            /// <inheritdoc/>
+            public string Replacement { get; set; }
+        }
     }
 }

src/Umbraco.Core/DependencyInjection/UmbracoBuilder.Configuration.cs

@@ -4,6 +4,7 @@ using System.Reflection;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
+using Umbraco.Cms.Core.Configuration;
 using Umbraco.Cms.Core.Configuration.Models;
 using Umbraco.Cms.Core.Configuration.Models.Validation;
 using Umbraco.Extensions;