docs(common): add breaking changes info for 1.3.0

Author: marin-bratanov

upgrade/breaking-changes/list.md

@@ -10,5 +10,7 @@ position: 0
 
 This article lists the releases of the Telerik UI for Blazor product that introduce breaking changes. You may want to go through it when [upgrading]({%slug upgrade-tutorial%}) to see whether you are affected.
 
+
+* [1.3.0]({%slug changes-in-1-3-0%})
 * [2.0.0]({%slug changes-in-2-0-0%})