Update Supported OS

Audit and update supported-os.json files in this repository. These files declare which operating system versions are supported for each .NET release. The corresponding supported-os.md files are generated from JSON — never hand-edit them.

When to use

• A new OS version is released (e.g. Ubuntu 26.04, Fedora 44, Alpine 3.23)
• An OS version reaches end-of-life and should be moved to unsupported
• Periodic audit to ensure the support matrix is current

Prerequisites

The following tools must be installed:

release-notes

The release-notes tool is used to verify and generate supported OS files. The public dotnet-release tool is now for browsing release data and CVEs. Packages are published to GitHub Packages.