Update to new CI pkg domain

Author: kzu

src/Tests/Tests.csproj

@@ -7,7 +7,7 @@
 
     <IsPackable>false</IsPackable>
     <IsTestProject>true</IsTestProject>
-    <RestoreSources>https://api.nuget.org/v3/index.json;https://pkg.kzu.io/index.json</RestoreSources>
+    <RestoreSources>https://api.nuget.org/v3/index.json;https://pkg.kzu.app/index.json</RestoreSources>
     <RestoreSources Condition="Exists('$(PackageOutputPath)')">$(PackageOutputPath);$(RestoreSources)</RestoreSources>
   </PropertyGroup>