**Description:** As a developer, I want to create a GitHub Actions job that tests my .NET projects against floating, bleeding edge .NET versions. For comparison, workflows for other languages like Go support this with the `"latest"` version value. **Justification:** Today, I do not see an option to let the .NET version automatically target the latest stable .NET release version. Which breaks efforts at futureproof testing, with each new major release of .NET.