Add support for Server 2025

[MichaelSimons]

New Windows Release

Windows version: Server 2025

Related to https://github.com/dotnet/core/issues/9374

Prep Tasks

1. • [ ] Ensure a "New Windows Release" issue exists for docker-tools repo
2. • [ ] Update manifest.json to include entries for the new images
3. • [ ] Update manifest.samples.json to include the new Windows version for each of the samples
4. • [ ] Update the test data for each of the test classes to include the new Windows version
5. • [ ] Run the update-dependencies tool to generate the new Dockerfiles and update all the necessary files:
     • [ ] dotnet run --project .\eng\update-dependencies
6. • [ ] Inspect generated changes for correctness
7. • [ ] Test the images
     1. • [ ] Create a local VM of the new Windows version
     2. • [ ] Clone this repo with the above changes onto the VM
     3. • [ ] Run .\build-and-test.ps1 -OS windowsservercore-<VERSION> to build and test your changes
8. • [ ] Revert any modifications that were made to the 3.5/runtime Dockerfile to support local testing due to the lack of the https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows.netfx3-.zip file.
9. • [ ] Commit generated changes
10. • [ ] Create PR
11. • [ ] Get PR signoff. Don't merge PR to main.

Release Day Tasks

1. • [ ] Create a `microsoft-windows.netfx3-.zip file containing the .NET Fx 3.5 cab installer file and upload it to the blob storage location.
2. • [ ] Follow Patch Tuesday release process
3. • [ ] Create an announcement (example: Windows Server, version 1909)