chore(version): updated latest version of the suite in config file (#89)

Author: svdimitr

_config.yml

@@ -350,7 +350,7 @@ intro_columns:
 baseurl: /blazor-ui
 
 ## Latest UI for Blazor version. Used in some articles
-uiForBlazorLatestVersion: "2.14.1"
+uiForBlazorLatestVersion: "2.15.0"
 supportedFrameworkVersion: ".NET Core 3.1.4"
 
 ## The Kendo UI version used