Migrates ASP.NET Core benchmark projects from .NET 9.0 to .NET 10.0 SDK and runtime.

Changes

Framework updates:

• Updated 5 aspnetcore Dockerfiles: sdk:9.0 → sdk:10.0, aspnet:9.0 → aspnet:10.0
• Updated 3 .csproj files: TargetFramework changed from net9.0 to net10.0

Files modified:

• CSharp/aspnetcore/: aspnetcore.dockerfile, aspnetcore-minimal.dockerfile, aspnetcore-mvc.dockerfile, aspnetcore-aot.dockerfile, aspnetcore-mysql.dockerfile
• CSharp/aspnetcore/src/: Platform.csproj, Minimal.csproj, Mvc.csproj

Example change:

-FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build

-<TargetFramework>net9.0</TargetFramework>
+<TargetFramework>net10.0</TargetFramework>

[!WARNING]

This pull request was created as a result of the following prompt from Copilot chat.

Update all Dockerfiles under CSharp/aspnetcore to use the base image mcr.microsoft.com/dotnet/sdk:10.0 instead of any previous sdk tags. Additionally, update all associated .csproj project files under CSharp/aspnetcore to target net10 (net 10.0) as their TargetFramework. Ensure to update any global.json files referencing the SDK version accordingly. After making the changes, ensure that the Docker images build successfully and the source compiles cleanly for the updated version.

This pull request was created as a result of the following prompt from Copilot chat.

Update all Dockerfiles under CSharp/aspnetcore to use the base image mcr.microsoft.com/dotnet/sdk:10.0 instead of any previous sdk tags. Additionally, update all associated .csproj project files under CSharp/aspnetcore to target net10 (net 10.0) as their TargetFramework. Ensure to update any global.json files referencing the SDK version accordingly. After making the changes, ensure that the Docker images build successfully and the source compiles cleanly for the updated version.

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