Update dotnet monorepo to v8

Author: renovate[bot]

Directory.Packages.props

@@ -24,7 +24,7 @@
     <PackageVersion Include="xunit" Version="2.4.2" />
     <PackageVersion Include="Xunit.DependencyInjection" Version="8.7.0" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.4.5" />
-    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="7.0.1" />
+    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.8" />
     <PackageVersion Include="Shouldly" Version="4.1.0" />
   </ItemGroup>
 

global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "7.0.101",
+    "version": "8.0.401",
     "rollForward": "latestMajor",
     "allowPrerelease": false
   }