Bump Microsoft.AspNetCore.Mvc.Testing from 8.0.8 to 8.0.10 in /src (#1012)

Author: dependabot[bot]

src/Directory.Packages.props

@@ -13,7 +13,7 @@
     <PackageVersion Include="GraphQL.SystemTextJson" Version="8.1.0" />
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="27.0.2" />
     <PackageVersion Include="Microsoft.AspNetCore.Http" Version="2.2.2" />
-    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.8" />
+    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.10" />
     <PackageVersion Include="Microsoft.Data.SqlClient" Version="5.2.2" />
     <PackageVersion Include="Microsoft.EntityFrameworkCore" Version="8.0.10" />
     <PackageVersion Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.8" />