Bump Microsoft.AspNetCore.Mvc.NewtonsoftJson from 8.0.20 to 8.0.21 (#1)

Author: dependabot[bot]

PerformanceServer/PerformanceServer.csproj

@@ -8,7 +8,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="8.0.20" />
+        <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="8.0.21" />
         <PackageReference Include="ppy.osu.Game" Version="2025.1029.0" />
         <PackageReference Include="ppy.osu.Game.Rulesets.Catch" Version="2025.1029.0" />
         <PackageReference Include="ppy.osu.Game.Rulesets.Mania" Version="2025.1029.0" />