chore: update to Umbraco 15rc2

Author: jcdcdev

src/TestSite/TestSite.csproj

@@ -7,7 +7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Umbraco.Cms" Version="15.0.0-rc1"/>
+        <PackageReference Include="Umbraco.Cms" Version="15.0.0-rc2"/>
 <!--        <PackageReference Include="uSync" Version="15.0.0"/>-->
     </ItemGroup>