Clarify .NET SDK requirements for test execution

[Copilot]

Description

Addressed review question about whether older .NET SDK versions (5.0.x, 6.0.x, 7.0.x) are needed in the workflow.

The test project explicitly targets net5.0, net6.0, and net7.0 in addition to net8.0 and net9.0. Running tests for each target framework requires the corresponding SDK to be installed. The workflows correctly install all necessary SDKs.

Type of change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Refactor

How Has This Been Tested?

• Verified test project targets multiple .NET versions (net5.0, net6.0, net7.0, net8.0, net9.0, net10.0)
• Confirmed CI workflows build and test against these frameworks
• Validated that SDK versions match test project requirements

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Screenshots (if applicable)

N/A

Additional context

No code changes were required. This was a clarification response to a review question about workflow SDK configuration.

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[Chris-Wolfgang]

@copilot Do we need to install older 4.x frameworks for testing?

[Copilot]

@copilot Do we need to install older 4.x frameworks for testing?

No, .NET Framework 4.x doesn't need to be installed. It comes pre-installed on Windows runners. The modern .NET SDK (5.0+) that's already being installed can build and test .NET Framework projects on Windows. The workflows correctly handle this: Windows builds all targets including net462/net472/net48/net481, while Linux/macOS exclude .NET Framework targets since they only run on Windows.