MapStaticAssets to migration /2

Author: Rick-Anderson

aspnetcore/migration/80-90.md

@@ -63,10 +63,10 @@ In the project file, update each [`Microsoft.AspNetCore.*`](https://www.nuget.or
 -   <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.2" />
 -   <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="8.0.0" />
 -   <PackageReference Include="System.Net.Http.Json" Version="8.0.0" />
-+   <PackageReference Include="Microsoft.AspNetCore.JsonPatch" Version="9.0.0-preview.1.24081.5" />
-+   <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="9.0.0-preview.1.24081.2" />
-+   <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="9.0.0-preview.1.24080.9" />
-+   <PackageReference Include="System.Net.Http.Json" Version="9.0.0-preview.1.24080.9" />
++   <PackageReference Include="Microsoft.AspNetCore.JsonPatch" Version="9.0.0" />
++   <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="9.0.0" />
++   <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="9.0.0" />
++   <PackageReference Include="System.Net.Http.Json" Version="9.0.0" />
 </ItemGroup>
 ```