.NET: Support debian-12 (bookworm)

[samruddhikhandale]

Depends on https://hub.docker.com/_/microsoft-dotnet-sdk/

• Open a PR
• Create a release
• Update templates if necessary
• Update [Tracking] Image support, deprecation / EOL dates #90

[samruddhikhandale]

Closing as completed!

📣 Released a new image version for dotnet with bookworm support. We would recommend pinning to newer major version 1 for continuing receiving security updates.