Update dependency NUnit3TestAdapter to v6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
NUnit3TestAdapter (source)	5.2.0 → 6.0.1

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[CodeLogicAI]

🚀 Library Upgrade Analysis Initiated

Relevant library changes detected. Specialized scans are being initiated.

📋 Direct Dependency Changes

Type	Group ID	Artifact ID	Old Version	New Version
NUGET_CSPROJ	N/A	NUnit3TestAdapter	5.2.0	6.0.1

🔬 Scan Execution Details

• Application: dnn-app
• Scan space: https://github.com/CodeLogicIncEngineering/Dnn.Platform|renovate/nunit3testadapter-6.x
• Source scan id: scan-dotnet-sourcelibs-1767127227175